354 Results for: "Gas Chromatography"

Supplier: VWR Chemicals

1,3-Dimethyl-2-imidazolidinone ≥99.5%, PESTINORM® for headspace gas chromatography

Supplier: VWR Chemicals

Dimethyl sulphoxide ≥99.99% (by anhydrous basis), PESTINORM® for headspace gas chromatography

Supplier: Merck

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

Supplier: Avantor

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

Supplier: Avantor

Petroleum spirit, 30…60 °C, BAKER ANALYZED® for gas chromatography, J.T.Baker®

Supplier: Avantor

Dimethyl sulphoxide, BAKER ANALYZED® for headspace gas chromatography, J.T.Baker®

Supplier: Merck

Clear, colorless fluid polymer useful as a stationary phase in gas chromatography and as an anti-foaming agent.

Supplier: Merck

These analytical standards are suitable for HPLC and gas chromatography. Mutil component solution with a concentration of 0,5 μg/ml B2 and G2 in acetonitrile and 2 μg/ml B1 and G1 in acetonitrile.

Supplier: Merck

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

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: VWR Collection

VWR®, Gas regulator with 0,01 µm filter and manometer

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

N-Methyl-2-pyrrolidone (NMP), SupraSolv® for headspace gas chromatography

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

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: Avantor

Selective adsorbent for gas chromatography. Contains activated magnesium silicate.

Supplier: Merck

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

Supplier: Avantor

Selective adsorbent for gas chromatography. Contains activated magnesium silicate.

Supplier: VWR Chemicals

N-Methyl-2-pyrrolidone (NMP) ≥99.8%, PESTINORM® for headspace gas chromatography

Supplier: Trajan Scientific and Medical

The gas tight syringes are fitted with a valve (SVLL) and a special Luer probe with a side hole for efficient sample intake.

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

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: ROBU GLASFILTER

These filters are suitable for degassing and filtration of solvents e.g. in chromatography.

Supplier: Trajan Scientific and Medical

Pure gas is a crictical requirement in gas chromatography, spectroscopy, optics, lithography and numerous other applications in manufacturing and laboratories. The SPure™ H₂O filters removes moisture, oil and dust from air and inert gases.

Supplier: Trajan Scientific and Medical

Syringe, chromatography, HPLC, Gas-tight, with M10 - 1,0 screw thread termination, 500C-HITACHI, Volume: 500 µl, For: L7200/7250, AS1000/2000/4000 LC, Pk: 1

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 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: Trajan Scientific and Medical

* Gas-tight.