22100 Results for: "gc-gas-chromatography"

Supplier: Merck

Sodium methoxide may be used as a derivatisation reagent to enhance the sensitivity of detection for the subsequent determination of organonitrogen herbicides and fungicide analytes in food samples, and bound fatty acids from acylglycerols, alkylacylglycerols, galactosyldiacylglycerols, glycerophospholipids, and sterol esters by gas chromatography (GC) based techniques.

Supplier: Merck

N,O-Bis(trimethylsilyl)trifluoroacetamide ≥98.0% (by GC) derivatisation reagent, for gas chromatography, Supelco®

Supplier: VWR Chemicals

Due to its excellent separation capacity and its high sensitivity gas chromatography is a widely used technique for analytical purposes. In order to get proper identification and quantification results of the analysed compounds, reference standards are needed. These PESTINORM® reference substances can be used for the characterisation of GC column properties. In addition they may also be used for the identification of unknown compounds in a gas chromatogram or as standards in quantitative GC analysis.

Supplier: Merck

Suitable as solvent for the analysis of residual solvents of ICH classes 1, 2 and 3.

Supplier: Merck

Suitable for HPLC and Gas chromatography (GC) applications.

Supplier: Merck

Analytical standard suitable for HPLC and gas chromatography (GC).

Supplier: Merck

4-Hydroxy-4-methyl-2-pentanone may be used as an internal standard in the analysis of volatile odor-active compounds present in wine using solid phase extraction with gas chromatography (SPE-GC).

Supplier: Merck

Pentafluorophenylhydrazine may be used as a derivatizing agent in the determination of semi-volatile carbonyl compounds in air and human plasma samples, using high-resolution gas chromatography coupled with gas chromatography (HRGC-MS) and liquid chromatography atmospheric-pressure chemical-ionization mass spectrometry (LC-APCI-MS-MS), respectively.

Supplier: Avantor

Methanol ≥99.9%, ULTRA RESI-ANALYZED® for gas chromatography, for purge and trap GC analysis, J.T.Baker®

Supplier: Merck

Profenofos CRM may also be used as given below: Evaluation of 250 pesticide residues extracted by QuEChERS method from 103 processed fruit samples using ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS. Gas chromatography-tandem mass spectrometry (GC-MS/MS) based analysis of 213 pesticide residues in soybean after their extraction by QuEChERS procedure. Detection of 252 pesticides extracted from surface water samples by solid-phase extraction (SPE) using liquid chromatography quadrupole-orbitrap high-resolution tandem mass spectrometry. Multi-residue analysis of 160 multiclass pesticides using ethyl acetate (EtAC)/n. hexane mixture for extraction from chamomile thyme and marjoram samples and their analysis by gas chromatography-tandem mass spectrometry (GC-MS/MS). Simultaneous determination of 34 pesticides in various environmental water samples by dispersive liquid-liquid microextraction (DLLME) technique in combination with gas chromatography-mass spectrometry(GC-MS/MS). Quantitation of 40 multi-class insecticides and fungicides in 81 apple samples by using gas- and liquid- chromatography-mass following a QuEChERS-based extraction.

Supplier: Merck

Chlorotrimethylsilane is a silylation reagent used in the derivatization of triglycerides into volatile fatty esters by gas chromatography (GC).

Supplier: Merck

Reference substances can be used for the identification of unknown compounds in a gas chromatogram or as standards in quantitative GC analysis. They serve also for the characterisation of GC column properties.

Supplier: Merck

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.

Supplier: Merck

Methyl heneicosanoate can find applications as an internal standard in the quantitative determination of fatty acids and their isomers composition using gas chromatography method of analysis (GC).

Supplier: Merck

SupraSolv® ECD and FID is specially developed for gas chromatography in combination with ECD (Electron Capture Detetor) and FID (Flame Ionisation 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.

Supplier: Merck

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.

Supplier: VWR Collection

Micro syringes without needle
General purpose Luer lock connector for use with autosamplers and liquid handling instruments. All parts in contact with sample are made from neutral borosilicate glass and PTFE. This provides excellent performance and an inert sample environment.

Supplier: Merck

SupraSolv® ECD and FID is specially developed for gas chromatography in combination with ECD (Electron Capture Detetor) and FID (Flame Ionisation 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.

Supplier: Merck

Triclosan-methyl has been used as antimicrobial agent in assay as positive controls in the isolation and identification of active antimicrobial compounds from E. linza algae extract, which was analysed using reversed phase high performance liquid chromatography method (RP-HPLC) and gas chromatography method (GC) coupled with mass spectroscopy, and further confirmed by nuclear magnetic resonance studies (NMR).

Supplier: Merck

Metrafenone CRM may also be used in the residue analysis of: 209 pesticides and persistent organic pollutants (POPs) extracted by QuEChERS-based procedure from fresh bovine and chicken liver samples using gas chromatography coupled to tandem mass spectrometry (GC-MS/MS). 252 pesticides extracted from surface water samples by solid-phase extraction (SPE) using liquid chromatography quadrupole-orbitrap high-resolution tandem mass spectrometry. 250 pesticide residues extracted by QuEChERS method from 103 processed fruit samples using ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). 379 pesticides in human serum samples extracted by QuEChERS method using liquid chromatography-tandem mass spectrometry (LC-MS/MS). Metrafenone in nine fresh vegetable samples using matrix solid-phase dispersion (MSPD) and HPLC-UV. Metrafenone in bitter gourd and soil samples using gas chromatography combined with an electron capture detector (GC-ECD).

Supplier: Merck

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.

Supplier: Merck

SupraSolv® ECD and FID is specially developed for gas chromatography in combination with ECD (Electron Capture Detetor) and FID (Flame Ionisation 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.

Supplier: VWR Collection

Agilent OpenLab CDS is the next generation chromatography data system, designed for ease of use and productivity. OpenLab CDS offers the most comprehensive instrument control and data acquisition for Hitachi HPLC and amino acid analysers. In addition, it supports an expanded array of instrumentation from other vendors, for example Agilent LC, GC and LC/MS. Whether you like to control a single instrument or a huge network of different analytical instruments, OpenLab CDS grows with your needs.

Supplier: Merck

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.

Supplier: Merck

Glycerol may be used as a reference standard in the determination of glycerol in samples of beer using gas liquid chromatography (GLC). It is a simple polyol compound, which is obtained as a by-product of soap and bio-diesel industries. It is odourless, colour-less, viscous in nature, and exists as a sweet tasting liquid. It can be derived naturally as well as from petrochemical feedstock.
Glycerol has been used as:

Supplier: Trajan Scientific and Medical

* Gas-tight.

Supplier: Merck

N,N-Dimethylacetamide, SupraSolv® for headspace gas chromatography, Supelco®

Supplier: Trajan Scientific and Medical

* Gas-tight.

Supplier: Trajan Scientific and Medical

Endura-Seals are the CRS alternative to typical silicone-rubber injection port septa for gas chromatography. They work in a 2 part sealing system that includes the septa and the sealing nut.

Supplier: Trajan Scientific and Medical

The SGE inlet liner range aims to make it simple for all gas chromatographers to select the correct liner.