851 Results for: "chromatography solvents"

Supplier: MilliporeSigma

SupraSolv® ECD and FID is specially developed for gas chromatography in combination with ECD (Electron Capture Detetor) and FID (Flame Ionization detector). SupraSolv® solvents offer the largest specified retention time range, a clear baseline and a minimal signal-to-noise ratio leading to reliable and reproducible analysis results. Typical applications include the determination of polychlorinated biphenyls (PCB) in water and soil or pesticides in fruits and vegetables. Also ideal for many EPA protocols.

Supplier: Spectrum Chemical Mfg. Corp.

2-(2-Ethoxyethoxy) Ethyl Acetate, Reagent is an organic compound that is a colorless, sweet smelling liquid that is the ester of ethanol and acetic acid. It has a range of uses and is found in many products such as decaffeinating tea and coffee, cigarettes, nail polish remover, glues and is manufactured on a large scale as a solvent. In the laboratory it is used in column chromatography and extraction. Its reagent grade means this is the highest quality commercially available for this chemical and that the American Chemical Society has not officially set any specifications for this material.

Supplier: Alkali Scientific

High quality water for use in cell culture applications. Alkali™ Cell Culture Grade Water Tested to USP Water is typically used in preparation of purification and chromatography buffers. Additionally, Cell culture grade water is high-quality water suitable for use as a solvent in the preparation of cell culture media and other reagents for sensitive applications. Our bioprocess container selections are suitable for large-scale applications such as cleaning and upstream and downstream reagent preparation. Cell culture grade water goes through a wide array of testing.

Supplier: Honeywell Research Chemicals

B&J GC2 Solvents are developed for trace analysis at or below the part-per-billion level, using capillary gas chromatography. Each lot is performance tested to meet demanding GC specifications.

Samples of every B&J GC2 solvent are concentrated 1000-fold and tested by temperature-programmed capillary GC-FID. This analysis detects both low-boiling and high-boiling molecules, anything eluting from toluene through diesel fuel and other semi-volatile compounds of environmental interest.

Features:
Less than 1 ppb trace contamination for semi-volatiles with a molecular weight greater than toluene (92).
Ideal for EPA protocols
Actual lot chromatograms available upon request

Electron capture GC: No residue peaks greater than two ng/L as lindane.

Flame ionization GC: No peaks greater than one ng/mL, having a retention time of greater than diacetone alcohol, on a crossbonded 5% diphenyl/95% dimethyl polysiloxane capillary column for a splitless injection of a 1000-fold sample concentrate after exchange into hexane.

Supplier: MP Biomedicals

Chloroform is a common laboratory reagent favored for use as a solvent due to the compounds relative unreactivity and miscibility with most organic compounds. Chloroform is a colorless, volatile chlorinated organic solvent whose vapors have a narcotic effect.
Chloroform is use as a solvent for fats, oils, rubber, alkaloids, waxes, gutta-percha, resins; as cleansing agent; in fire extinguishers to lower the freezing temperature of carbon tetrachloride. Procedures have been described for the use of chloroform in lambda plaques storage, lambda cDNA storage, the removal of mineral oil from PCR reaction samples, oligonucleotide purification, a hydroxyl radical footprinting protocol, a transcriptional run-on assay protocol, and an overlay assay for beta-galactosidase activity. It has also been used with phenol in such procedures as DNA recovery from polyacrylamide gels, ethidium bromide removal from DNA preparations, lysis protocols for plasmid DNA isolation, RNase removal, and purification of yeast DNA. A protocol describes the use of chloroform in a high-performance thin-layer chromatography protocol for sphingomyelin analysis. Chloroform can also be used in chloroform/methanol mixtures for the isolation of cardiolipids from Geobacillus stearothermophilus and their subsequent MS analysis. The isolation of the bacteriocin amylovorin L471 from Lactobacillus amylovorus DCE 471 in culture broth has been reported, using chloroform/methanol extraction and precipitation in the procedure. Chloroform/2-butanol mixtures can be used for the extraction of steroid sulfates for analysis by nanoelectrospray ionization mass spectrometry.
Physical Appearance: Liquid
Vapor Density: 4.36 (air = 1) (Lit.)
Vapor Pressure: 211 hPa at 20 °C(Lit.)
Refractive Index: n20/D 1.445(Lit.)
Solubility: Soluble in water (1 mL/200 mL water); miscible with ethanol, benzene, ether, petroleum ether, carbon tetrachloride, carbon disulfide, oils.

Supplier: MP Biomedicals

Chloroform is typically used as a solvent and as a cleansing agent. Procedures have been described for the use of chloroform in lambda plaques storage, lambda cDNA storage, the removal of mineral oil from PCR reaction samples, oligonucleotide purification, a hydroxyl radical footprinting protocol, a transcriptional run-on assay protocol, and an overlay assay for beta-galactosidase activity. It has also been used with phenol in such procedures as DNA recovery from polyacrylamide gels, ethidium bromide removal from DNA preparations, lysis protocols for plasmid DNA isolation, RNase removal, and purification of yeast DNA. A protocol describes the use of chloroform in a high-performance thin-layer chromatography protocol for sphingomyelin analysis. Chloroform can also be used in chloroform/methanol mixtures for the isolation of cardiolipids from Geobacillus stearothermophilus and their subsequent MS analysis. The isolation of the bacteriocin amylovorin L471 from Lactobacillus amylovorus DCE 471 in culture broth has been reported, using chloroform/methanol extraction and precipitation in the procedure. Chloroform/2-butanol mixtures can be used for the extraction of steroid sulfates for analysis by nanoelectrospray ionization mass spectrometry.

Supplier: VWR International

DPTMDS deactivated fused silica retention gap/precolumn. General purpose deactivation for both apolar and polar solvents.

Supplier: VWR International

Application specifc columns developed for complex solvents mixtures analysis. HI-SOLVE 1 is ideal for aromatics and oxygenates in gasoline.

Supplier: VWR International

Application specifc columns developed for complex solvents mixtures analysis. HI-SOLVE 2 is ideal for aromatics and oxygenates in gasoline.

Supplier: VWR International

HMDS deactivated fused silica retention gap / precolumn. Deactivation mainly for apolar solvents.

Supplier: VWR International

CW deactivated fused silica retention gap / precolumn. Deactivation mainly for polar solvents.

Supplier: VWR International

Apolar phase, suitable for high flm thickness columns, to analyze solvents, alcohols, volatiles, and so on.

Supplier: VWR International

Apolar phase, suitable for high flm thickness columns, to analyze solvents, alcohols, volatiles, and so on.

Supplier: VWR International

General purpose column for solvent impurities, PCBs, hydrocarbons, essential oils, semivolatiles, allergens, pesticides, and so on.

Supplier: VWR International

General purpose GC-MS column Solvent impurities, PCBs, SimDist, drugs, natural gases, essential oils, semivolatiles, pesticides, phenols, etc.

Supplier: VWR International

General purpose GC-MS column with extra stability. For the analysis of solvent impurities, PCBs, hydrocarbons, essential oils, semivolatiles, pesticides, phenols, etc.

Supplier: VWR International

General purpose low-to-mid-polarity phase for a wide range of applications, including (for example): Residual solvents, volatile pollutants.

Supplier: VWR International

General purpose column for solvent impurities, PCBs, hydrocarbons, essential oils, semivolatiles, triglycerides, pesticides, poly-waxes, and so on.

Supplier: VWR International

General purpose low-to-mid-polarity phase for a wide range of applications, including (for example): Residual solvents, volatile pollutants. HI-624 MS is an MS grade crossbonded column.

Supplier: VWR International

Application specifc columns for volatile organic compounds (VOCs), solvents and purgeable compounds. Due to the high max. temperature, they are ideal for two-parallel columns confg. in the same oven. A good alternative to the HI-624 giving different selectivity. It is a more robust than the HI-624 and can operate at higher temperatures.

Supplier: VWR International

General purpose column with added temperature stability. For the analysis of solvent impurities, PCBs, hydrocarbons, essential oils, semivolatiles, pesticides, phenols and more.

Supplier: AVANTOR PERFORMANCE MATERIAL LLC

Ultra-clean, polypropylene columns with BAKERBOND® HPLC media are engineered to save time, minimize work and final solvent volumes, and improve performance.

Supplier: VWR International

Application specifc columns for volatile organic compounds (VOCs), solvents and purgeable compounds. Due to the high maximum temperature, they are ideal for two-parallel columns confg. in the same oven. A good alternative to the HI-624 giving different selectivity. It is a more robust than the HI-624 and can operate at higher temperatures.

Supplier: DWK Life Sciences (KIMBLE)

MicroLiter's syringes feature polypropylene housings that are solvent-resistant and clearly marked for media and pore size.

Supplier: Avantor

PEEK (polyetheretherketone) polymer tubing is biocompatible and chemically inert to most solvents. It is completely flexible, can easily be cut to desired lengths and is suitable for a wide range of applications.

Supplier: Restek

Direct injection Uniliner® liners minimize solvent and peak tailing.

Supplier: Restek

General-purpose columns for solvents, Freon® fluorocarbons, alcohols, ketones, silanes, and glycols.

Supplier: AVANTOR PERFORMANCE MATERIAL LLC

For liquid chromatography and spectrophotometry. UV cutoff 197nm. Packaged under nitrogen. Lot analysis on label.

Supplier: AVANTOR PERFORMANCE MATERIAL LLC

Suitable for liquid chromatography, extract/conc, UV-spectrophotometry, organic residue analysis.

Supplier: Restek

For the analysis of pesticides, PCBs, solvents, and drugs.