Compound List Bisphenol A (80-05-7) Diclofenac sodium salt (15307-79-6) 17-beta-Estradiol (50-28-2) Estrone (53-16-7) 17-alpha-Ethynylestradiol (57-63-6) 4-para-Nonylphenol (84852-15-3) 4-tert-Octylphenol (140-66-9) Primidone (125-33-7) Progestrone (57-83-0) Testosterone (58-22-0)

Compound List 1,4-Dioxane (123-91-1)

Restek chemists became the first to combine the speed of superficially porous particles (also known as SPP or “core-shell” particles) with the resolution of highly selective USLC technology. This new breed of chromatographic column allows you to more easily achieve peak separation and…

Replace active hydrogen, reducing polarity and making the compounds more volatile. Increase stability of derivatives.

Sampling bags are a low-cost, whole-air sampling device for high-level VOCs and permanent gases. Several EPA, NIOSH, and OSHA methods exist for bag sampling for a variety of applications: stationary sources emissions; workplace atmospheres; ambient, indoor air quality; and breath analysis. Choose…

low- to midpolarity phase The unique polarity of the Rtx-624 column makes it ideal for analyzing volatile organic pollutants. Although the Rtx-502.2 column is recommended in many methods, the Rtx-624 column offers better resolution of early eluting compounds. The Rtx-624 phase produces greater…

low- to midpolarity phase Many analysts feel the Rtx-1301 column has the best cyanosiloxane bonded stationary phase available, with no other column manufacturer providing lower bleed, longer lifetime, or better inertness. Our polymer is fully characterized to ensure long-term reproducibility,…

2,3-di-acetoxy-6-O-tert-butyl dimethylsilyl beta cyclodextrin added into 14% cyanopropylphenyl/86% dimethyl polysiloxane By adding β or γ cyclodextrin to our bonded Rtx-1701 stationary phase, we greatly enhance overall utility and column lifetime for our chiral columns, compared to…

Ideal for quickly and reliably connecting PEEK tubing in HPLC systems One-piece, finger-tight fittings—no ferrules required Low dead volume Included end fittings and body made of biocompatible PEEK Available in 0.25, 0.50, and 0.75 mm bore sizes Maximum temperature: 100°C …

polar phase; Crossbond polyethylene glycol Rtx-Wax columns are the most inert and efficient PEG columns currently available. The extended operating temperature range allows analysis of compounds having a wide volatility range and ensures low bleed at temperatures as high as 250°C.…

Ultra HPLC Columns The Ultra line represents Restek’s broadest selection of stationary phases on a single silica support. Made of high-purity, type-B silica that minimizes activity and creates high-density bonding, these columns are designed for selective and reliable HPLC applications. …

Allure Organic Acids columns provide enhanced retention and selectivity for polar organic acids, allowing the separation to be performed on a single 30 cm column. An Allure Organic Acids column effectively resolves key organic acids such as tartaric and quinic acids using the chromatographic…

Use to verify the retention time for each compound normally included in a blood alcohol test, and to verify that the compounds are resolved from and do not interfere with one another. Includes 1-propanol internal standard. Intended for qualitative use only. Compound List Acetaldehyde…

Compound List Acrolein (107-02-8) 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…

Tested with a comprehensive test mix to ensure high inertness. Useful for a wide range of applications. Use with most common solvents. Maximum temperature: 325°C. *30- and 60-meter lengths are banded in 5-meter sections. †Recommendation: Cut 60 m guard columns into shorter…

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. Formulated and grouped for maximum long-term stability*. Quantitatively tested to confirm composition; detailed…

The Parker HydroGen Mate DI Water System is specifically designed to provide the high-purity deionized water needed by all models of Parker hydrogen generators. The system is ready to install and is shipped complete with prefiltration cartridge, two DI resin exchange cartridges, final filter, and…

Prevent the particulates and microbial growth in your LC solvents from entering your instrument with the new Restek Bluestem glass solvent filter. Restek Bluestem glass solvent filter provides clean mobile phase to extend the life of columns and pump seals 15 µm borosilicate glass…

A traditional end-capped C18 ideal for general-purpose use in reversed-phase chromatography Wide pH range (2–8) provides excellent data quality for many applications, matrices, and compounds Offers high hydrophobic retention Similar Phase(s): Discovery C18, Symmetry C18, Hypersil…

Conforms to the specifications established in the current ASTM method D3606 for the quantitation of benzene and toluene in spark ignition fuel containing ethanol. Complete resolution of benzene from ethanol—no compromising coelutions. Accurate quantification of benzene and toluene.…

Ultra HPLC Columns The Ultra line represents Restek’s broadest selection of stationary phases on a single silica support. Made of high-purity, type-B silica that minimizes activity and creates high-density bonding, these columns are designed for selective and reliable HPLC applications. …

The Poly Crimp seal is versatile, working as either a snap-on or crimp-top cap. Simply use a standard crimping tool to secure the Poly Crimp seal onto any crimp-top vial. It’s that easy! Choose preslit caps (available for some vials) to reduce the risk of needle bending, release vacuum…

Precut, micropolished tubing and preseated fittings for quick, easy maintenance of your Agilent HPLC systems Meet or exceed manufacturer's performance.

low- to midpolarity phase; Crossbond diphenyl dimethyl polysiloxane Rtx-20 polymer is synthesized to exacting standards. All residual catalysts and low molecular weight fragments are removed from the polymer, providing a tight monomodal distribution and extremely low bleed. …

Graphite Ferrules Preconditioned to eliminate outgassing. High-purity, high-density graphite. Smoother surface and cleaner edges than conventional graphite ferrules. Contain no binders that can off-gas or adsorb analytes. Stable to 450°C. Vespel/Graphite Ferrules …

ASTM D5836 and OSHA 42 are test methods for determining 2,4-toluene diisocyanate (2,4-TDI) and 2,6-TDI in the workplace atmosphere. OSHA 47 is for 4,4'-methylenediphenyl isocyanate (4,4'-MDI) in indoor air, and NIOSH Method 5522 is for 2,4-TDI; 2,6-TDI; 4,4'-MDI; and 1,6-hexamethylene…

NPD Detector: Internal Standard: 1-bromo-2-nitrobenzene (cat.# 32279) Surrogate: 4-chloro-3-nitrobenzotrifluoride (cat.# 32282)

Increased efficiency over traditional packed columns. Higher capacity than PLOT columns. Made from inert, flexible SilcoSmooth tubing. Wide range of packings available. Standard coils fit all instruments. No special instrument configurations required. Efficient, Inert, and…

Caps not included (sold separately).

*The reported concentrations reflect the amount of aldehyde or ketone in the mixture. The concentration of derivatized aldehyde or ketone is not reported.