delim
Food Safety
Soluzioni per la sicurezza alimentare
di Restek

  • Esperienza garantita. Mettiamo decenni di esperienza nell'analisi della sicurezza alimentare al lavoro per voi.
  • I migliori prodotti di cromatografia Restek®: colonne GC e LC e prodotti di consumo, materiali di riferimento certificati e prodotti di preparazione del campione.
  • Siamo anche chimici. Sappiamo che avete bisogno di risultati accurati rapidi e ci impegniamo a trovare soluzioni adatte a voi.

In Restek, comprendiamo la natura frenetica delle analisi della sicurezza alimentare. In qualità di analisti, potreste dover segnalare i residui pesticidi nei mirtilli un giorno e quello successivo analizzare la carne per rilevare la presenza di farmaci veterinari. E indipendentemente da quanto sia complessa la matrice campione, le spedizioni aspettano; quindi dovete ottenere risultati accurati al primo giro. Ecco perché i chimici della sicurezza alimentare di Restek non si allontanano mai dal banco per sviluppare nuovi prodotti cromatografici e ottimizzare la preparazione del campione e dei metodi GC e LC da cui dipendete per fornire risultati accurati in modo veloce e in sicurezza. Ecco alcune delle aree in cui ci concentriamo per assistere meglio i laboratori di sicurezza alimentare.

In Restek, vi consideriamo colleghi e siamo personalmente impegnati verso il vostro successo. Lavorare ogni giorno con clienti come voi ci consente di conoscere le tendenze emergenti, le tecniche e le esigenze del mercato. In base a questa esperienza, lavoriamo sodo per sviluppare le migliori soluzioni di cromatografia per le difficili analisi della sicurezza alimentare. Il nostro obiettivo è fare in modo che il vostro lavoro sia più semplice fornendo i prodotti e le risorse per cromatografia di cui avete bisogno per ottenere subito i risultati corretti.

INCONTRATE GLI ESPERTI

Siamo chimici proprio come voi: sappiamo che non c'è niente di più frustrante che metodi che non funzionano come promesso. Poiché non vendiamo strumenti, manteniamo la nostra indipendenza e forniamo consigli obiettivi sui prodotti e i metodi che soddisfaranno meglio le vostre esigenze. Se state lottando con una matrice difficile o una coeluizione ostinata, contattateci, siamo qui per aiutarvi!

Servizio Tecnico
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Contatto

Columns

Colonne Rxi-5ms (silice fusa)

(fase a bassa polarità; difenil dimetil polisilossano Crossbond)

  • Colonne per uso generico per semivolatili, fenoli, ammine. solventi residui, droghe d'abuso, pesticidi, congeneri di PCB (p.e.Aroclor mix), impurità solventi
  • E' la colonna più inerte sul mercato
  • Testata e garantira per bleed ultra bassi; miglior rapporto segnale/rumore per una migliore sensibilità in MS
  • Range di emperature : -60 °C - 330/350 °C
  • Equivalente alle fasi USP G27 e G36

Colonne Rxi-PAH (silice fusa)

(fase proprietaria a polarità intermedia)

  • Ideali per analisi EFSA PAH4 —separano tutti i componenti prioritari: benz[a]anthracene, chrysene, benzo[b]fluoranthene e benzo[a]pyrene
  • Ottima risoluzione di chrysene dagli IPA interferenti triphenylene e cyclopenta[cd]pyrene
  • Separazione completa di benzo [b], [k], [ j] e [a] fluoranthenes
  • La stabilità termica a 360 °C permette l'analisi di composti a bassa volatilità come i dibenzo pyreni.

Pre-colonne/Retention Gap Rxi (silice fusa)

  • Durata maggiore della colonna
  • Eccellente inerzia — limiti di rivelazione più bassi per i composti attivi
  • picchi cromatografici più affilati mediante l'uso della retention gap
  • Temperatura massima: 360 °C.

Colonne Rxi-5Sil MS (silice fusa)

(fase a bassa polarità; 1,4-bis(dimetilsiloxi)fenilene dimetil polisilossano Crossbond)

  • Progettata per essere una colonna GC-MS a basso bleed
  • Eccelente inerzia per composti attivi
  • Colonne per uso generico —ideali per analisi in GC-MS di semivolatili, composti policiclici aromatici, idrocarburi policiclici, idrocarburi clorinati, ftalati, fenoli, ammine, pesticidi organoclorurati, pesticidi organofosforati, droghe, impurità solventi e idrocarburi
  • Range di temperatura: -60 °C 3 350 °C.

Colonne Ultra Aqueous C18 (USP L1)

Dimensioni delle particelle: 3 µm e 5 µm, sferica.
Pore size: 100 Å.
Carbon Load: 15%.
End-cap: no.
Range di pH: 2.5 - 8.
Limiti di temperatura: 80 °C.
Codice fase USP: L1.
Categoria fase: C18 modificata.
Tipo ligando: modificato polare e funzionalmente legato a C18, proprietaria.

Colonne LC Raptor ARC-18 (USP L1)

  • Ideali per alti flussi di lavoro in applicazioni in LC - MS/MS con una minima preparazione del campione
  • Profilo di ritenzione ben equilibrato per una migliore individuazione e integrazione di un gran numero di analiti multiclasse
  • Protette stericamente per sopportare fasi mobili a pH bassi senza sacrificare la ritenzione e la qualità del picco
  • Fanno parte della linea di colonna LC Raptor core-shell in silice SPP da 1,8 micron, 2,7 micron e 5 micron Raptor

Pre-colonne Raptor EXP

  • L'architettura "Free- Turn" consente di cambiare le cartucce manualmente senza danneggiare l'ingresso e l'uscita delle connessioni - Non è necessaro usare attrezzi
  • Brevettate con ferrule in titanio ibrido per essere installate più volte senza compromettere la tenuta ad alta pressione
  • Si auto-regolano per garantire la connessione ZDV (zero death volume)

Reference Standards

QuEChERS Reference Standards

Browse our comprehensive list of QuEChERS reference standards, including internal standards and mixes for AOAC QuEChERS methods.

Pesticide Standards for Food Safety

Browse our complete offering of pesticide standards formulated specifically for food safety.

Kit pesticidi multiresidui LC

  • 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.

Standard interni marcati per analisi di pesticidi residui in matrice alimentare

  • Marcati isotopicamente per garantire il miglior approccio nell’analisi quantitativa di pesticide multiresiduali
  • La presa di varie opzioni vi permetterà di scegliere standard interni e surrogati per mitigare gli effetti dovuti alla matrice
  • Economici e compatibili sia con applicazioni LC-MS sia GC-MS; utilizzabili anche per ottimizzare le performance dei sistemi LC-MS/MS
  • Restek propone le migliori e le più complete soluzioni nell’ambito della sicurezza alimentare: Standard di Riferimento Certificati CRM di pesticidi, standard interni e surrogati, colonne LC e GC, QuEChERS, e molto altro!

QuEChERS Performance Standards Kit

Designed for use in all QuEChERS methods for pesticides in fruits and vegetables, including the original unbuffered method, AOAC 2007.01, and EN15662.

EFSA PAH4 Standard

Convenient high concentration standard (1,000 μg/mL) allows you to dilute as needed to economically prepare custom mixes. Contains all four EFSA PAH4 compounds in toluene.

Standard MOSH/MOAH (9 componenti)

  • Developed specifically for using LC coupled with GC-FID to accurately determine hydrocarbons found in mineral oils, which can migrate from processing equipment and packaging into food.
  • This 9-component mix contains noninterfering internal standards as well as both mineral oil saturated hydrocarbon (MOSH) and mineral oil aromatic hydrocarbon (MOAH) markers that are used to correctly cut LC fractions.

Melamine Analysis Kit

Everything you need for GC analysis of melamine. Includes Rxi-5Sil MS GC column, reference standards, derivatization reagent, centrifuge tubes, syringe filters, and easy-to-follow instructions.

Sample Handling

Provette dSPE Q-sep QuEChERS per estrazione cleanup

Preparazione del campione per analisi di pesticidi multiresiduo Veloce e Facile

  • Packaged in foil subpacks of 10 for enhanced protection and storage stability.
  • Ready-to-use tubes, no glassware required.
  • Pre-weighed, ultra-pure sorbents.
  • Support original unbuffered, AOAC (2007.01), European (EN 15662), and mini-multiresidue QuEChERS methods.

Centrifuga Q-sep 3000

per QuEChERS

  • Supports 50 mL, 15 mL, and 2 mL centrifuge tubes.
  • Small footprint requires less bench space.
  • Safe and reliableUL, CSA, and CE approved; 1-year warranty.

Bottiglia Q-sep Top Solvent dispenser

  • Adjustment knob offers 56 output volume settings from 2.5 mL to 30 mL per stroke (0.5 mL increments)ideal for QuEChERS methods!
  • Base features 30 mm threads and includes four adaptors (25 mm, 28 mm, 38 mm, and 45 mm).
  • Individually calibrated in accordance with ISO 8655 standards (certificate included) and can also be recalibrated by the user.
  • PTFE, glass, and polypropylene construction for excellent chemical compatibility and 100% autoclavability.
  • Integral safety discharge reduces risk of accidental dispensing, and nozzle cap prevents dripping.
  • Easy to disassemble for cleaning and servicing.

Rack per provette Q-sep

  • Available for 2 mL, 15 mL, and 50 mL tubes.
  • Alphanumerical grid reference on top tier for easy identification of samples.
  • Easy to assemble; simply fold and snap together securely.

Cartucce SPE per cleanup di pestici residuali

  • Convenient, multiple adsorbent beds in a single cartridge.
  • For use in multiresidue pesticide analysis to remove matrix interferences.
  • Excellent for cleanup of dietary supplement extracts.

Cartucce SPE Resprep (Fase Diretta)

Hydrophilic (polar) adsorbents used to extract hydrophilic analytes from nonpolar matrices, such as organic solvents (e.g., polar contaminants from sample extracts).

Tubi da centrifuga vuoti, FEP

Sturdy, easy-to-clean FEP (fluorinated ethylene propylene)-lined tubes last indefinitely under normal usage conditionsand cost 50% less!

Supplies & Accessories

Topaz Inlet Liners

Topaz GC inlet liners from Restek feature a revolutionary deactivation that delivers inertness you’ll have to see for yourself to believe. Experience the next level of True Blue Performance.

Connettori Press-Tight universali

  • Universal fit: use with 0.10.53 mm ID Restek columns (0.330.74 mm OD).
  • Optional deactivated fused quartz helps eliminate activity for complete inertness along the GC flow path.
  • Optional Siltek deactivation is ideal for organochlorine pesticides analysis.
  • Connect a guard column to an analytical column.
  • Repair a broken column.
  • Connect a column outlet to a transfer line.

Rilevatore di perdite elettronico Restek

Non permettete che una piccola perdita vi comporti una costosa riparazione, proteggete la colonna analitica con un rilevatore di perdite Restek.

  • Segnali acustici che indicano l’entità della perdita
  • I nuovi circuiti consentono di avere fino a 12 ore di operatività tra una carica e la successiva.
  • Rileva un’ampia gamma di gas; classificato Ex per essere utilizzato con idrogeno ed altri gas esplosivi.*

Holder a connessione diretta EXP

  • L'architettura "Free- Turn" consente di cambiare le cartucce manualmente senza danneggiare l'ingresso e l'uscita delle connessioni - Non è necessaro usare attrezzi
  • Brevettate con ferrule in titanio ibrido per essere installate più volte senza compromettere la tenuta ad alta pressione
  • Si auto-regolano per garantire la connessione ZDV (zero death volume)
  • L'holder a connessione diretta EXP richiede cartucce dedicate; disponibili nei seguenti formati: 2,1, 3,0 e 4,6mm

Raccordi riutilizzabili EXP per HPLC e UHPLC per raccordi da 10-32 e tubi da 1/16"

Raccordi EXP da serrare a mano

  • Hand-tight fitting style achieves effortless HPLC sealsno tools needed for a 8,700+ psi seal.
  • Both hand-tight and hex-head styles wrench tighten for reliable UHPLC use up to 20,000+ psi!
  • Patented ferrule can be installed repeatedly without compromising high-pressure seal.
  • Hybrid design combines the durability of titanium with the sealing ability of PEEK.
  • Cutting-edge system provides ZDV (zero dead volume) connection to any 10-32 female port.
  • Compatible with 1/16" PEEK and stainless steel tubing.

GC Accessories

Full line of GC consumables, lab tools to make your life easier, and replacement parts for all major instrument manufacturers.

LC Accessories

Quality replacement parts, tools, and accessories for liquid chromatography.

Standard Filter Vials Thomson SINGLE StEP

  • Recommended for samples containing less than 10% solid particulates.
  • Easy-to-use vials offer fast sample filtration and require only a squeeze of your fingers.
  • Minimize sample loss by eliminating multiple transfers.
  • Color-coded caps allow easy identification of 0.2 μm or 0.45 μm membranes in PVDF, PTFE, PES, or nylon.
  • Pre-slit PTFE/silicone caps help eliminate broken autosampler needles and cored septa.
  • Rugged polypropylene vial houses insert with 450 μL loading capacity and low dead volume (120 μL).
  • Fit most standard 12 x 32 mm autosamplers, including UHPLC instruments.
Alimentare, Aromi & Fragranze

Analytical Method for Polycyclic Aromatic Hydrocarbons (PAHs) in Yerba Mate Tea Using Modified QuEChERS, Solid Phase Extraction and GC-TOFMS and GC-MS/MS

This application note describes the development of an analytical method for PAHs in tea that allows analysts to more quickly and accurately characterize target PAHs. Sample preparation is based on a modified QuEChERS extraction and solid phase extraction sample cleanup. Both GC-TOFMS and GC-MS/MS techniques were used and analyses were optimized for resolution of isobaric compounds, as well as for maintaining a reasonable analysis time.

Alimentare, Aromi & Fragranze

Mitigating Matrix Effects: Examination of Dilution, QuEChERS, and Calibration Strategies for LC-MS/MS Analysis of Pesticide Residues in Diverse Food Types

LC-MS/MS is popular for monitoring pesticide residues in food due to its selectivity and sensitivity; however, matrix effects can cause poor data quality and difficult quantification. We evaluated the relative effectiveness of sample dilution, QuEChERS cleanup, solvent-based calibration, and matrix-matched calibration strategies to mitigate matrix effects in celery, kale, avocado, lime, and brown rice flour.

Alimentare, Aromi & Fragranze

A Comprehensive Approach to Pesticide Residue Testing, Including Non-Target Analysis, for Fruits, Vegetables, and Nuts, Using QuEChERS, LC-MS/MS, and GCxGC-TOFMS

Food commodities that varied in water, fat, and pigment content were fortified with pesticides and processed using a QuEChERS sample preparation technique. Samples were analyzed by both GCxGC-TOFMS and LC-MS/MS, and good recoveries were obtained for most pesticides in most commodities.

Alimentare, Aromi & Fragranze

Comparing Pesticide Residues in Amish and Commercially Grown Strawberries and Spinach Using QuEChERS, Various dSPE Sorbents, and GC-TOFMS

QuEChERS extraction, dSPE cleanup, and GC-TOFMS analysis were used to assess pesticide residue levels in strawberry and spinach from both commercial and Amish growers. Various dSPE sorbent products were compared to determine which were most effective.

Alimentare, Aromi & Fragranze

Evaluation of Dispersive and Cartridge Solid Phase Extraction (SPE) Cleanups for Multiresidue Pesticides in QuEChERS Extracts of Finished Tobacco Using GCxGC-TOFMS

We compared the efficacy of dSPE and cSPE cleanup methods for multiresidue pesticide analysis of QuEChERS extracts of finished tobacco products using GCxGC-TOFMS. Cleanup with dSPE tubes containing 7.5 mg of GCB and 25 mg of PSA produced better results than other methods, with average recoveries of 92% and 91% for 500 ppb and 50 ppb fortifications respectively.

Alimentare, Aromi & Fragranze

Simple, Reliable HPLC Analyses of Organic Acids - Using Water-Compatible Allure® or Ultra C18 Columns

Commonly used organic acid methods (e.g. AOAC method 986.13) depend on reversed phase HPLC and C18 columns, however these columns are vulnerable to phase collapse when used with the aqueous mobile phases necessary for optimal organic acid analysis. Restek’s Ultra Aqueous C18, Allure® Aqueous C18, and Allure® Organic Acids columns all withstand phase collapse and resolve organic acids in a 100% aqueous mobile phase, compared to a conventional C18 column which shows a complete loss of retention.

Interesse Generale

Prepare Olive Oil Samples for Pesticide Residue Analysis in Half the Time With a Fraction of the Solvent Using dSPE

Simplify and speed up sample preparation with Resprep dSPE tubes! Here we show the extraction and clean-up of pesticide residues from olive oil samples—twice as fast as GPC, with only a fraction of the solvent required for conventional SPE.

PDF Document

New Rxi-PAH GC Column; Resolve Important Isobaric Polycyclic Aromatic Hydrocarbons for Food Safety and Environmental Methods

Separate isobaric polycyclic aromatic hydrocarbons, including priority EFSA PAH4 compounds benz[a]anthracene, chrysene, benzo[b]fluoranthene, and benzo[a]pyrene, easily and accurately on an Rxi-PAH column. Whether you need more resolution or faster analysis, these new GC columns offer the selectivity and efficiency you need for food safety and environmental PAH analysis. (PDF - 0MB)

PDF Document

Ensure Successful Polycyclic Aromatic Hydrocarbon (PAH) Analysis—Choose Specialized Rxi-PAH Columns

Whether you are analyzing comprehensive lists or focusing on the EFSA PAH4, the Rxi-PAH column ensures your success by combining efficiency, selectivity, and robustness to produce a column that outperforms all competitors’ columns. Chose the configuration that best suits your application and be confident that you are reporting accurate results without bias from interferences.​ (PDF - 0MB)

PDF Document

HPLC Analysis of Glucosinolates in Vegetable Extracts without Ion Pairing Using an Ultra Aqueous C18 Column

Glucosinolates with hydrophilic functional groups are very difficult to retain by conventional reversed phase HPLC, and when the functional groups in a sample are diverse, polarity can differ widely, complicating the problem. Until now, reversed phase HPLC with an ion pairing reagent has been the inconvenient, but necessary, approach to these analyses. This 2-page note describes a column and conditions for analyses of glucosinolates, without ion pairing. (PDF - 0MB)

PDF Document

Developing New Methods for Pesticides in Dietary Supplements

QuEChERS is a simple, effective approach to sample prep that can be applied to the analysis of pesticides in dietary supplements. Here, we demonstrate a QuEChERS, cSPE, GC-TOFMS procedure that results in good recoveries for a wide range of pesticides in dandelion root. (PDF - 0MB)

PDF Document

Fast, Simple QuEChERS Extraction and Cleanup of Pesticide Residue Samples

QuEChERS dSPE methods simplify extract cleanup, reduce material costs, and improve sample throughput. Here we demonstrate the effectiveness of QuEChERS sample cleanup using a multiresidue analysis of pesticides on strawberries. (PDF - 0MB)

LC Chromatograms

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