Ricerca standard

Isomeric in nature, the pyrethrins neat material contains the following isomers: cinerin I and II, jasmolin I and II, and pyrethrin I and II. Isomer ratios for each lot are given in elution order on the certificate.

Accurately detect and quantify pesticides of global food safety concern in a wide range of fruits, vegetables, and other commodities by LC-MS/MS.

Accurately detect and quantify pesticides of global food safety concern in a wide range of fruits, vegetables, and other commodities by LC-MS/MS.

• For accurate determination of trans fat content in foods and edible oils.
• Pair with an Rt-2560 GC column for reliable AOAC and AOCS method performance.
• Verified composition and stability.

• For accurate determination of trans fat content in foods and edible oils.
• Pair with an Rt-2560 GC column for reliable AOAC and AOCS method performance.
• Verified composition and stability.

• For accurate determination of trans fat content in foods and edible oils.
• Pair with an Rt-2560 GC column for reliable AOAC and AOCS method performance.
• Verified composition and stability.

• For accurate determination of trans fat content in foods and edible oils.
• Pair with an Rt-2560 GC column for reliable AOAC and AOCS method performance.
• Verified composition and stability.

• For accurate determination of trans fat content in foods and edible oils.
• Pair with an Rt-2560 GC column for reliable AOAC and AOCS method performance.
• Verified composition and stability.
  
  Boron trifluoride is very sensitive to moisture and should not be stored after opening. This is a single-use container.

• For accurate determination of trans fat content in foods and edible oils.
• Pair with an Rt-2560 GC column for reliable AOAC and AOCS method performance.
• Verified composition and stability.
  
  Boron trifluoride is very sensitive to moisture and should not be stored after opening. This is a single-use container.

• U.S. Drug Enforcement Agency (DEA)-exempted preparation—no need to purchase costly neat materials or to make your own standards.
• A must for accurate quantification in cannabis potency testing and strain ID.
• Verified composition and stability.

Isomeric in nature, the pyrethrins neat material contains the following isomers: cinerin I and II, jasmolin I and II, and pyrethrin I and II. Isomer ratios for each lot are given in elution order on the certificate.

• U.S. Drug Enforcement Agency (DEA)-exempted preparation—no need to purchase costly neat materials or to make your own standards.
• Pair with Restek's THC standards to analyze both neutrals and acids in cannabis products by LC.
• A must for accurate quantification in cannabis potency testing and strain ID.
• Prepared in acetonitrile, instead of methanol, to maintain stability and prevent methylation of carboxylic acid groups.

Accurately detect and quantify pesticides of global food safety concern in a wide range of fruits, vegetables, and other commodities by LC-MS/MS.

Accurately detect and quantify pesticides of global food safety concern in a wide range of fruits, vegetables, and other commodities by LC-MS/MS.

• The industry's only suite of off-the-shelf reference standards for detecting ethylene oxide and 1,4-dioxane* in PEG-based products.
• Formulated with concentrations needed by labs analyzing cosmetics and personal care products for possible carcinogens.
• Quantitatively tested to confirm composition; detailed support documentation provided.

NOTE: Cat. #s 32463–32468 are dissolved in acetone and replace cat. #s 32219–32224, which were dissolved in methanol.

NOTE: Cat. #s 32463–32468 are dissolved in acetone and replace cat. #s 32219–32224, which were dissolved in methanol.

NOTE: Cat. #s 32463–32468 are dissolved in acetone and replace cat. #s 32219–32224, which were dissolved in methanol.

NOTE: Cat. #s 32463–32468 are dissolved in acetone and replace cat. #s 32219–32224, which were dissolved in methanol.

NOTE: Cat. #s 32463–32468 are dissolved in acetone and replace cat. #s 32219–32224, which were dissolved in methanol.

U.S. DEA exempted formulation—no additional customer permits are required to purchase.
Canadian Test Kit registration numbers are assigned and available on individual product pages.

U.S. DEA exempted formulation—no additional customer permits are required to purchase.
Canadian Test Kit registration numbers are assigned and available on individual product pages.

U.S. DEA exempted formulation—no additional customer permits are required to purchase.
Canadian Test Kit registration numbers are assigned and available on individual product pages.

U.S. DEA exempted formulation—no additional customer permits are required to purchase.
Canadian Test Kit registration numbers are assigned and available on individual product pages.

U.S. DEA exempted formulation—no additional customer permits are required to purchase.
Canadian Test Kit registration numbers are assigned and available on individual product pages.

U.S. DEA exempted formulation—no additional customer permits are required to purchase.
Canadian Test Kit registration numbers are assigned and available on individual product pages.

U.S. DEA exempted formulation—no additional customer permits are required to purchase.
Canadian Test Kit registration numbers are assigned and available on individual product pages.

U.S. DEA exempted formulation—no additional customer permits are required to purchase.
Canadian Test Kit registration numbers are assigned and available on individual product pages.

• Ready to use for generating test mixes, calibration standards, and spiking experiments.
• Reliable standards produced according to specifications defined in AOAC Official Method 2007.01.
• Cost-effective QuEChERS standards can be used without dilutions for greater lab efficiency.

• Ready to use for generating test mixes, calibration standards, and spiking experiments.
• Reliable standards produced according to specifications defined in AOAC Official Method 2007.01.
• Cost-effective QuEChERS standards can be used without dilutions for greater lab efficiency.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

This reference standard is prepared from levorphanol tartrate dihydrate (CAS# 5985-38-6) at a final concentration equivalent to 1000 µg/mL of the parent compound levorphanol (CAS# 77-07-6).

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for seven days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

**La concentrazione attuale di n-esano riportata (determinata tramite curva di calibrazione) può essere al di sotto dei limiti dei solventi residui USP <467> e può produrre falsi positivi.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

U.S. DEA exempted formulation—no additional customer permits are required to purchase.
Canadian Test Kit registration numbers are assigned and available on individual product pages.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

U.S. DEA exempted formulation—no additional customer permits are required to purchase.
Canadian Test Kit registration numbers are assigned and available on individual product pages.

U.S. DEA exempted formulation—no additional customer permits are required to purchase.
Canadian Test Kit registration numbers are assigned and available on individual product pages.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

Note: Stressed shipping studies indicate that this product remains stable after being continuously exposed to an elevated temperature of 40 °C for 7 days. Ground freight is the default shipping method for this product; expedited methods are available upon request.

• Chlordane standards may exhibit lot-to-lot variation.
• See the Documentation tab for chromatograms on certificates of recently produced lots and inquire about availability.

Ready to use for QuEChERS extractions—no dilutions necessary.

Ready to use for QuEChERS extractions—no dilutions necessary.

This product has a limited shelf life. We recommend that you order only the ampul quantity that meets your immediate needs.

NOTE: Store standards under frozen conditions (0 °C or colder). We recommend you store ampuls lying flat (horizontally) to prevent breakage. For best results, thaw the contents of the ampul fully and shake the ampul well before opening and using the solution.

This product has a limited shelf life. We recommend that you order only the ampul quantity that meets your immediate needs.

NOTE: Store standards under frozen conditions (0 °C or colder). We recommend you store ampuls lying flat (horizontally) to prevent breakage. For best results, thaw the contents of the ampul fully and shake the ampul well before opening and using the solution.

To ensure the highest quality explosives standards, Restek chemists carefully purify or synthesize all of the compounds listed in EPA Method 8330.

To ensure the highest quality explosives standards, Restek chemists carefully purify or synthesize all of the compounds listed in EPA Method 8330.

• Toxaphene standards may exhibit lot-to-lot variation.
• See the Documentation tab for chromatograms on certificates of recently produced lots and inquire about availability.

• Toxaphene standards may exhibit lot-to-lot variation.
• See the Documentation tab for chromatograms on certificates of recently produced lots and inquire about availability.

The biodiesel component is methyl soyate.

The biodiesel component is methyl soyate.

An internal standard for oxygenates.

An internal standard for oxygenates.

Oxygenate additive in (US) gasolines.
A US EPA target analyte that is not commercially available, this reference material is prepared from a laboratory-synthesized sample.

Oxygenate additive in (US) gasolines.
A US EPA target analyte that is not commercially available, this reference material is prepared from a laboratory-synthesized sample.

• Meets CCME 2001 Petroleum Hydrocarbons in Soil Method—Tier 1.
• Primary reference calibration standards for quantification of four fractions.

• Meets CCME 2001 Petroleum Hydrocarbons in Soil Method—Tier 1.
• Primary reference calibration standards for quantification of four fractions.

Complete data pack available for audit compliance.

Complete data pack available for audit compliance.

Complete data pack available for audit compliance.

Complete data pack available for audit compliance.

Complete data pack available for audit compliance.

Complete data pack available for audit compliance.

Complete data pack available for audit compliance.

Complete data pack available for audit compliance.

Complete data pack available for audit compliance.

Complete data pack available for audit compliance.

Components in this mix (0.5 µL/mL or 0.05% volume/volume each) are at 10X the concentration of the final test solution specified in ASTM 1618 and ASTM 1387.

Components in this mix (0.5 µL/mL or 0.05% volume/volume each) are at 10X the concentration of the final test solution specified in ASTM 1618 and ASTM 1387.

There are four general types of mineral spirits, classified according to boiling point range (BPR):

• Type I (Stoddard solvent), BPR 149–182 °C
• Type II (high flash point), BPR 177–196 °C
• Type III (odorless), BPR 149–196 °C
• Type IV (low dry point), BPR 149–174 °C
  
  This standard is manufactured using the Type 1 mineral spirit.
  
  Note: Cat.#s 31260 and 31261 are produced with CAS# 64475-85-0, a Type 1 Mineral Spirit containing the proper ratio of n-alkanes (higher proportion) and isoparaffins/cycloalkanes (lower proportion). Lots produced prior to March 2017 contained CAS# 8030-30-6, a C10-C13 isoparaffins odorless Mineral Spirit with >98% isoparaffins (branched alkanes/aromatics) and minimal n-alkanes.

There are four general types of mineral spirits, classified according to boiling point range (BPR):

• Type I (Stoddard solvent), BPR 149–182 °C
• Type II (high flash point), BPR 177–196 °C
• Type III (odorless), BPR 149–196 °C
• Type IV (low dry point), BPR 149–174 °C
  
  This standard is manufactured using the Type 1 mineral spirit.
  
  Note: Cat.#s 31260 and 31261 are produced with CAS# 64475-85-0, a Type 1 Mineral Spirit containing the proper ratio of n-alkanes (higher proportion) and isoparaffins/cycloalkanes (lower proportion). Lots produced prior to March 2017 contained CAS# 8030-30-6, a C10-C13 isoparaffins odorless Mineral Spirit with >98% isoparaffins (branched alkanes/aromatics) and minimal n-alkanes.

There are four general types of mineral spirits, classified according to boiling point range (BPR):

• Type I (Stoddard solvent), BPR 149–182 °C
• Type II (high flash point), BPR 177–196 °C
• Type III (odorless), BPR 149–196 °C
• Type IV (low dry point), BPR 149–174 °C
  
  This standard is manufactured using the Type 1 mineral spirit.
  
  Note: Cat.#s 31260 and 31261 are produced with CAS# 64475-85-0, a Type 1 Mineral Spirit containing the proper ratio of n-alkanes (higher proportion) and isoparaffins/cycloalkanes (lower proportion). Lots produced prior to March 2017 contained CAS# 8030-30-6, a C10-C13 isoparaffins odorless Mineral Spirit with >98% isoparaffins (branched alkanes/aromatics) and minimal n-alkanes.

Prepared from a single source (one refinery) product. The weathered materials indicate the percent weight loss from the original material.

Prepared from a single source (one refinery) product. The weathered materials indicate the percent weight loss from the original material.

Prepared from a single source (one refinery) product. The weathered materials indicate the percent weight loss from the original material.

Prepared from a single source (one refinery) product. The weathered materials indicate the percent weight loss from the original material.

Prepared from a single source (one refinery) product. The weathered materials indicate the percent weight loss from the original material.

Prepared from a single source (one refinery) product. The weathered materials indicate the percent weight loss from the original material.

Supports ASTM Methods D2887, D6352, D7169, D7398, and D7500.

These high molecular weight hydrocarbon waxes are useful for simulated distillation and other high-temperature GC work.

We offer this certified reference material for those who need to calibrate Stoddard solvent separately. This standard is dissolved in methanol for analysis by either direct injection or purge and trap.

We offer this certified reference material for those who need to calibrate Stoddard solvent separately. This standard is dissolved in methanol for analysis by either direct injection or purge and trap.

We offer this certified reference material for those who need to calibrate Stoddard solvent separately. This standard is dissolved in methanol for analysis by either direct injection or purge and trap.

• For total petroleum hydrocarbon pattern recognition of hydraulic oil.
• High concentration—50,000 µg/mL in methylene chloride.

• For total petroleum hydrocarbon pattern recognition of hydraulic oil.
• High concentration—50,000 µg/mL in methylene chloride.

Creosote oil is a coal tar derived distillate.

• For total petroleum hydrocarbon pattern recognition of creosote oil.
• High concentration—50,000 µg/mL in methylene chloride.

Creosote oil is a coal tar derived distillate.

• For total petroleum hydrocarbon pattern recognition of creosote oil.
• High concentration—50,000 µg/mL in methylene chloride.

100-octane, low-lead fuel used in piston-type aircraft.

100-octane, low-lead fuel used in piston-type aircraft.

A high-viscosity residual type of heavy fuel oil requiring preheating to 104–127 °C. This material is also known as residual fuel oil (RFO) or Bunker C.

A high-viscosity residual type of heavy fuel oil requiring preheating to 104–127 °C. This material is also known as residual fuel oil (RFO) or Bunker C.

Fuel oil #4 is typically used in limited applications in which the fuel cannot be preheated prior to burning. The fuel is a blend of distillate (fuel oil #2) and residual (fuel oil #6).

Fuel oil #4 is typically used in limited applications in which the fuel cannot be preheated prior to burning. The fuel is a blend of distillate (fuel oil #2) and residual (fuel oil #6).

• Prepared from an equal-volume blend from five gasoline-powered vehicles (belonging to Restek employees). After blending, a precisely weighed amount of the composite is added to a volumetric flask to produce the standard.
• Motor oil standards may exhibit lot-to-lot variation.
• See the Documentation tab for chromatograms on certificates of recently produced lots and inquire about availability.

• Prepared from an equal-volume blend from five gasoline-powered vehicles (belonging to Restek employees). After blending, a precisely weighed amount of the composite is added to a volumetric flask to produce the standard.
• Motor oil standards may exhibit lot-to-lot variation.
• See the Documentation tab for chromatograms on certificates of recently produced lots and inquire about availability.

• Prepared from an equal-volume blend of 5W30, 10W30, 10W40, and 20W50 motor oils. After blending, a precisely weighed amount of the composite is added to a volumetric flask to produce the standard.
• Motor oil standards may exhibit lot-to-lot variation.
• See the Documentation tab for chromatograms on certificates of recently produced lots and inquire about availability.

• Prepared from an equal-volume blend of 5W30, 10W30, 10W40, and 20W50 motor oils. After blending, a precisely weighed amount of the composite is added to a volumetric flask to produce the standard.
• Motor oil standards may exhibit lot-to-lot variation.
• See the Documentation tab for chromatograms on certificates of recently produced lots and inquire about availability.

• Kerosene composite standards are comprised of three separate sources blended in equal portions.
• Kerosene standards may exhibit lot-to-lot variation.
• See the Documentation tab for chromatograms on certificates of recently produced lots and inquire about availability.

• Kerosene composite standards are comprised of three separate sources blended in equal portions.
• Kerosene standards may exhibit lot-to-lot variation.
• See the Documentation tab for chromatograms on certificates of recently produced lots and inquire about availability.

• Diesel Fuel composite standards are comprised of three separate sources blended in equal portions.
• Diesel Fuel standards may exhibit lot-to-lot variation.
• See the Documentation tab for chromatograms on certificates of recently produced lots and inquire about availability.

• Diesel Fuel composite standards are comprised of three separate sources blended in equal portions.
• Diesel Fuel standards may exhibit lot-to-lot variation.
• See the Documentation tab for chromatograms on certificates of recently produced lots and inquire about availability.

• Unleaded gasoline composite standards are comprised of three separate sources each of 87, 89, and 93 octane blended in equal portions.
• Gasoline standards may exhibit lot-to-lot variation.
• See the Documentation tab for chromatograms on certificates of recently produced lots and inquire about availability.
  
  NOTE: BTEX content of catalog numbers 30081, 30205, and 30206 is not measured. Certified BTEX gasoline standards are available as catalog numbers 30237 and 30485.

• Unleaded gasoline composite standards are comprised of three separate sources each of 87, 89, and 93 octane blended in equal portions.
• Gasoline standards may exhibit lot-to-lot variation.
• See the Documentation tab for chromatograms on certificates of recently produced lots and inquire about availability.
  
  NOTE: BTEX content of catalog numbers 30081, 30205, and 30206 is not measured. Certified BTEX gasoline standards are available as catalog numbers 30237 and 30485.

We prepare the L/C VOA Lab Control Sample in two parts. Sample #1 contains all compounds except vinyl chloride, because this compound is extremely volatile and must be replaced frequently. Sample #2 contains vinyl chloride.

We prepare the L/C VOA Lab Control Sample in two parts. Sample #1 contains all compounds except vinyl chloride, because this compound is extremely volatile and must be replaced frequently. Sample #2 contains vinyl chloride.

EPA Method 8330 is used to measure explosives residues in water and soil samples, using HPLC with UV detection.¹ Target analytes are nitroaromatic and nitramine explosives and their degradation products. Obtaining pure, neat compounds for Method 8330 reference standards can be very difficult. To ensure the highest quality standards, Restek's Quality Control (QC) lab confirms the identity and purity of mixture components and solvents using one or more of the following techniques: GC-FID, HPLC, GC-ECD, GC-MS, LC-MS, refractive index, and melting point.

EPA Method 8330 is used to measure explosives residues in water and soil samples, using HPLC with UV detection.¹ Target analytes are nitroaromatic and nitramine explosives and their degradation products. Obtaining pure, neat compounds for Method 8330 reference standards can be very difficult. To ensure the highest quality standards, Restek's Quality Control (QC) lab confirms the identity and purity of mixture components and solvents using one or more of the following techniques: GC-FID, HPLC, GC-ECD, GC-MS, LC-MS, refractive index, and melting point.

EPA Method 8330 is used to measure explosives residues in water and soil samples, using HPLC with UV detection.¹ Target analytes are nitroaromatic and nitramine explosives and their degradation products. Obtaining pure, neat compounds for Method 8330 reference standards can be very difficult. To ensure the highest quality standards, Restek's Quality Control (QC) lab confirms the identity and purity of mixture components and solvents using one or more of the following techniques: GC-FID, HPLC, GC-ECD, GC-MS, LC-MS, refractive index, and melting point.

EPA Method 8330 is used to measure explosives residues in water and soil samples, using HPLC with UV detection.¹ Target analytes are nitroaromatic and nitramine explosives and their degradation products. Obtaining pure, neat compounds for Method 8330 reference standards can be very difficult. To ensure the highest quality standards, Restek's Quality Control (QC) lab confirms the identity and purity of mixture components and solvents using one or more of the following techniques: GC-FID, HPLC, GC-ECD, GC-MS, LC-MS, refractive index, and melting point.

EPA Method 8330 is used to measure explosives residues in water and soil samples, using HPLC with UV detection.¹ Target analytes are nitroaromatic and nitramine explosives and their degradation products. Obtaining pure, neat compounds for Method 8330 reference standards can be very difficult. To ensure the highest quality standards, Restek's Quality Control (QC) lab confirms the identity and purity of mixture components and solvents using one or more of the following techniques: GC-FID, HPLC, GC-ECD, GC-MS, LC-MS, refractive index, and melting point.

EPA Method 8330 is used to measure explosives residues in water and soil samples, using HPLC with UV detection.¹ Target analytes are nitroaromatic and nitramine explosives and their degradation products. Obtaining pure, neat compounds for Method 8330 reference standards can be very difficult. To ensure the highest quality standards, Restek's Quality Control (QC) lab confirms the identity and purity of mixture components and solvents using one or more of the following techniques: GC-FID, HPLC, GC-ECD, GC-MS, LC-MS, refractive index, and melting point.

• High concentration.
• Acetonitrile solvent—suitable for HPLC analyses.

• High concentration.
• Acetonitrile solvent—suitable for HPLC analyses.

A pure, quantitative chloroprene solution, specially stabilized in purge-and-trap grade methanol to allow dilutions for working standards in unmodified purge-and-trap methanol. The entire preparation procedure is performed under carefully monitored conditions to prevent any contamination or polymerization of the highly reactive, neat chloroprene.

A pure, quantitative chloroprene solution, specially stabilized in purge-and-trap grade methanol to allow dilutions for working standards in unmodified purge-and-trap methanol. The entire preparation procedure is performed under carefully monitored conditions to prevent any contamination or polymerization of the highly reactive, neat chloroprene.

• Aroclor standards may exhibit lot-to-lot variation.
• See the Documentation tab for chromatograms on certificates of recently produced lots and inquire about availability.

• Aroclor standards may exhibit lot-to-lot variation.
• See the Documentation tab for chromatograms on certificates of recently produced lots and inquire about availability.

• Aroclor standards may exhibit lot-to-lot variation.
• See the Documentation tab for chromatograms on certificates of recently produced lots and inquire about availability.

• Aroclor standards may exhibit lot-to-lot variation.
• See the Documentation tab for chromatograms on certificates of recently produced lots and inquire about availability.

• Efficiently controls foam; effective over a wide pH range.
• No hazardous materials, no components that are target analytes.
• Effective at less than 0.1% of sample volume.

• Efficiently controls foam; effective over a wide pH range.
• No hazardous materials, no components that are target analytes.
• Effective at less than 0.1% of sample volume.

Contains 1 mL each of these mixtures.
30211: 501 Trihalomethane Mix
30219: DW-VOC Mix #1
30220: DW-VOC Mix #2
30235: DW-VOC Mix #3

Our high-quality air monitoring gas calibration standards are provided by Spectra/Linde and Airgas (formerly Scott/Air Liquide gas)—meeting lab requirements for two separate sources of calibration standards.

Note: Actual cylinder pressure may vary due to loss from quality testing procedure.

To view compatible regulators, select your standard below and see Restek Recommends.

Our high-quality air monitoring gas calibration standards are provided by Spectra/Linde and Airgas (formerly Scott/Air Liquide gas)—meeting lab requirements for two separate sources of calibration standards.

Note: Actual cylinder pressure may vary due to loss from quality testing procedure.

To view compatible regulators, select your standard below and see Restek Recommends.

Our high-quality air monitoring gas calibration standards are provided by Spectra/Linde and Airgas (formerly Scott/Air Liquide gas)—meeting lab requirements for two separate sources of calibration standards.

Note: Actual cylinder pressure may vary due to loss from quality testing procedure.

To view compatible regulators, select your standard below and see Restek Recommends.