Composti e classi

• Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables, botanicals, and herbals such as tea, ginseng, ginger, echinacea, and dietary supplements.
• Comprehensive 203-compound kit covers food safety lists by the FDA, USDA, and other global governmental agencies; individual ampuls also sold separately.

• Accurately detect and quantify pesticides of global food safety concern in a wide range of fruits, vegetables, and other commodities by LC-MS/MS.
• Full kit contains 204 compounds of interest, covering many LC-determined pesticides listed by government agencies; individual ampuls also sold separately.

• Developed specifically for EPA Method 525.3.
• Formulated to provide maximum stability in concentrations convenient for dilution.
• Simplifies and speeds up standard preparation.
• Quantitatively tested to confirm composition; detailed support documentation provided.

• Developed specifically for EPA Method 525.3.
• Formulated to provide maximum stability in concentrations convenient for dilution.
• Simplifies and speeds up standard preparation.
• Quantitatively tested to confirm composition; detailed support documentation provided.

• Developed specifically for EPA Method 525.3.
• Formulated to provide maximum stability in concentrations convenient for dilution.
• Simplifies and speeds up standard preparation.
• Quantitatively tested to confirm composition; detailed support documentation provided.

• Developed specifically for EPA Method 525.3.
• Formulated to provide maximum stability in concentrations convenient for dilution.
• Simplifies and speeds up standard preparation.
• Quantitatively tested to confirm composition; detailed support documentation provided.

• Developed specifically for EPA Method 525.3.
• Formulated to provide maximum stability in concentrations convenient for dilution.
• Simplifies and speeds up standard preparation.
• Quantitatively tested to confirm composition; detailed support documentation provided.

• Developed specifically for EPA Method 525.3.
• Formulated to provide maximum stability in concentrations convenient for dilution.
• Simplifies and speeds up standard preparation.
• Quantitatively tested to confirm composition; detailed support documentation provided.

• Developed specifically for EPA Method 525.3.
• Formulated to provide maximum stability in concentrations convenient for dilution.
• Simplifies and speeds up standard preparation.
• Quantitatively tested to confirm composition; detailed support documentation provided.

• Developed specifically for EPA Method 525.3.
• Formulated to provide maximum stability in concentrations convenient for dilution.
• Simplifies and speeds up standard preparation.
• Quantitatively tested to confirm composition; detailed support documentation provided.

• Contains 75 compounds in one convenient ampul for the analysis of VOCs in solid waste.
• Quantitatively analyzed to confirm concentration and identity of each compound.
• Excludes pentachloroethane for labs experiencing elevated tetrachloroethene response caused by pentachloroethane breakdown.

• Full 82-component EPA 524.3 list using as few as three ampuls—reduce prep time and chances for error or contamination.
• EPA 524.3 VOA MegaMix ampul includes oxygenates group—no need to order separately.
• Volatile gases prepared separately—replace shorter-life components without wasting money on full list.
• Two options for internal and surrogate standards—separate or combined mix.
• Also ideal for surface water and groundwater testing.

• Fewest mixtures needed for calibration and matrix spikes.
• Mixtures formulated for maximum stability.
• Contains most routinely analyzed compounds.

• Contains 76 compounds in one convenient ampul for the analysis of VOCs in solid waste.
• Quantitatively analyzed to confirm concentration and identity of each compound.

• MegaMix mixture includes all target compounds not in our current products.
• Incorporates all phenols, for fast preparation and calibration.
• Incorporates "additional" extractable Method 625 compounds.

• Indicato per un' ampio range di sistemi di indice di ritenzione.
• Materiale di riferimento certificato (CRM)stabile ed accurato.
• Analizzato qualitativamente per confermarne la composizione; certificato disponibile per ogni lotto di CRM.

• Formulated to contain the 16 major European Food Safety Authority (EFSA) PAH compounds.
• High concentration (100 μg/mL) solution provides value and flexibility. Dilute as needed for fortification and calibration mixes.
• Low-volatility toluene solvent provides longer shelf life, which helps ensure more accurate results.
• Broad solvent miscibility—compatible with acetonitrile, the QuEChERS solvent.
• Pair with Rxi-PAH GC column for easy separation of critical PAH compounds from common interferences in food and environmental samples.
• HPLC compatible when diluted in appropriate solvent and analyzed with Pinnacle II PAH columns or UHPLC compatible on the Pinnacle DB PAH column.

• European Food Safety Authority (EFSA) PAH4 compounds prepared in toluene solvent.
• High 1,000 µg/mL concentration—dilute as needed to economically prepare custom mixes.
• Low volatility—longer shelf life and more accurate results.
• High miscibility—compatible with QuEChERS solvents.
• Pair with Rxi-PAH GC column for easy separation of EFSA PAH4 compounds from common interferences in food and environmental samples.

• Contains the seven hormones listed in EPA Method 539 at concentrations suited for Unregulated Contaminant Monitoring Rule 3 (UCMR3) screening.
• Ideal for the analysis of finished drinking water as outlined in UCMR3, which requires monitoring of all public drinking water systems with 10,000 or more customers.

• Contains the seven hormones listed in EPA Method 539 at the appropriate concentrations.

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.

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

• For GC analysis of total petroleum hydrocarbons (TPH) in water.
• Environmentally safer than previous methods.
• Calibration standard available as diesel #2/motor oil and diesel #2/mineral oil.

• For GC analysis of total petroleum hydrocarbons (TPH) in water.
• Calibration standard available as diesel #2/motor oil and diesel #2/mineral oil.

• For GC analysis of total petroleum hydrocarbons (TPH) in water.
• Environmentally safer than previous methods.
• Calibration standard available as diesel #2/motor oil and diesel #2/mineral oil.

• Updated reference materials for GC analysis of TPH in water.
• Determination of hydrocarbon oil index—applicable to drinking, surface, waste, and treated water.

• 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.

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.

• For current Massachusetts VPH method: surrogate included.
• Matrix spike mix at 50µg/mL, per updated method.

• Standard for current Massachusetts VPH method: surrogate included.
• More analyses per ampul—standard with surrogate is 10,000µg/mL.

• Confirm unleaded gasoline TPH, BTEX, and aromatics in a single analysis.
• Certificate of Analysis includes concentration of TPH, and certified concentrations of BTEX and individual aromatics.
• Complete data pack available.

• 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.

• 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.

• 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.

• 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.

• Easily determine the retention time window for each boiling point range.
• Prepared in n-pentane according to EPA requirements.

• 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.

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

• Convenient 15µg/mL concentration, similar to the concentration of interest in most ambient air work.
• Fast analysis — Ultra C18 HPLC column separates 15 aldehydes/ketones in 16 minutes.

• Highest concentrations commercially available.
• Reduces laboratory cost per sample extract.

• Highest concentrations commercially available.
• Reduces laboratory cost per sample extract.

• Highest concentrations commercially available.
• Convenient 1 mL, 5 mL, and 10 mL package sizes.
• Reduces laboratory cost per sample extract.

• High purity for consistent results.
• Free quality assurance data package available online.
• Highest concentrations commercially available.
• Convenient 1 mL, 5 mL, and 10 mL package sizes reduce cost per sample extract.

• High purity for consistent results.
• Free quality assurance data package available online.
• Highest concentrations commercially available.

• Includes methyl acetate and n-amyl acetate.
• Contains 7 acetates.

• Chlordane 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.

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

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.

• Reference mix of the two most common odor-causing compounds.
• Convenient concentration for purge-and-trap analysis: 100 µg/mL in methanol.

• Meet Stage 1 requirements for US EPA Methods 552, 552.1 and 552.2.
• Meet requirements for Stage 2 DBPR.
• Prepared from purified neat reference materials for the highest quality.
• Lot-to-lot consistency ensures analytical reproducibility.

• Meet Stage 1 requirements for US EPA Methods 552, 552.1 and 552.2.
• Meet requirements for Stage 2 DBPR.
• Prepared from purified neat reference materials for the highest quality.
• Lot-to-lot consistency ensures analytical reproducibility.

• Meet Stage 1 requirements for US EPA Methods 552, 552.1 and 552.2.
• Meet requirements for Stage 2 DBPR.
• Prepared from purified neat reference materials for the highest quality.
• Lot-to-lot consistency ensures analytical reproducibility.

• Complete set of materials for N-methylcarbamoyloximes and N-methylcarbamates.
• New mix satisfies latest update of EPA Method 531.2.
• Formulated in acetonitrile for stability and convenience for LC analysis.

• Reference materials for U.S. EPA Method 528.
• Fortification solution formulated based on MS sensitivity to each analyte.

• Reference materials for U.S. EPA Method 528.
• Fortification solution formulated based on MS sensitivity to each analyte.

• Separate mixes for surrogates and internal standard.
• Fortification solution combines surrogates and internal standard.
• Calibration mixes and all other quality control mixes also available.

• Designed for daily assessment of system performance.
• Reveals active sites in the injection port and/or GC column.
• Prepared in MTBE—low expansion volume helps minimize backflash.

• 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.

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.

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.

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.