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94 résultats pour Étalons de chromatographie gazeuse

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Frequently used for calibration, the chromatography standards have a known concentration to test separating equipment for performance faults. Analytical equipment error would impact the dependability of retention time, purity, molecular weight, and compound identification conclusions. Improving data quality, the substances allow personnel to plot analyte signal ratios and obtain concentrations from a calibration curve. Chromatography standards verify instruments are suitable for intended ion exchange, gel filtration, and hydrophobic interaction procedures.

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Étalons pour la chromatographie en phase gazeuse, étalon d'échantillon d'espace libre OQ/PV

Supplier: Agilent

L'échantillon standard OQ/PV pour l'espace libre contient 0,2 - 0,3% de t-butyl disulfide, 1,2-dichlorobenzène et du nitrobenzène dans de l'éthanol.

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Substances de référence

Substances de référence

Supplier: Merck

Les substances de référence peuvent être utilisées pour l'identification des composés inconnus dans un chromatogramme en phase gazeuse ou en tant que standards dans l'analyse GC quantitative. Elles servent également à la caractérisation des propriétés des colonnes GC.

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Peptide and protein MALDI-MS calibration kit, ProteoMass™, Supelco®

Supplier: Merck

This kit features a convenient selection of pre-qualified standard peptides, proteins, matrices, and solvents for calibrating and testing matrix assisted laser desorption ionisation (MALDI) mass spectrometers.

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Corning Life Sciences

Why Choose Corning Fetal Bovine Serum?

Our vertically integrated FBS serum supply chain, from collection to scientist, allows us to provide a consistent supply of FBS.

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Poly(α-methylstyrene) analytical standards, for GPC

Supplier: Merck

Poly(α-methylstyrene) may find applications as a radical producing agent, in the thermal degradation of polystyrene.

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Poly(methacrylic acid sodium salt) analytical standards, for GPC, Supelco®

Supplier: Merck

GPC Standard, ~18600,Mw, Mw/Mn <1,20, Supelco®

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Tétrahydrofurane (THF), étalon de référence secondaire pour la GC, PESTINORM®

Tétrahydrofurane (THF), étalon de référence secondaire pour la GC, PESTINORM®

Supplier: VWR Chemicals

Étalon de référence secondaire de solvant dans la GC, pour diverses applications chromatographiques et analytiques.

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Poly(2-vinylpyridine), analytical standards, Supelco®

Supplier: Merck

GPC Standard, Mw 37,500 (Typical), Supelco®, Glass bottle

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Poly(lauryl methacrylate) solution, Mw 570000 (Typical), average Mn 290000 (Typical), analytical standard, Supelco®

Supplier: Merck

GPC Standard, Poly(lauryl methacrylate) solution, Mw 570000 (Typical), average Mn 290000 (Typical), Supelco®, 25 wt. % in toluene, Analytical standard

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HPLC isocratic systems diagnostics mix, in methanol: water (3:2) (varied concentration), certified reference material, Supelco®

Supplier: Merck

This formulation is designed for evaluating how reliably a chromatographic system is providing such fundamentally important parameters as flow rate, proportioning, and mixing.

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Reversed phase test mix, in methanol: water (3:2) (varied conc.), certified reference material, Supelco®

Supplier: Merck

HPLC Standard, Reversed Phase Test Mix, in methanol: water (3:2) (varied conc.), TraceCERT®, Supelco®, Certified reference material, Info cdt: ampule of 1 mL

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Poly(ethylene glycol) analytical standards, for GPC, Supelco

Supplier: Merck

Poly(ethylene glycol) is the most widely used non-ionic, hydrophilic polymer, which can find wide applications in biomedical industry such as in drug delivery systems.

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Dichlorométhane (DCM) stabilisé, étalon de référence secondaire pour la GC, PESTINORM®

Dichlorométhane (DCM) stabilisé, étalon de référence secondaire pour la GC, PESTINORM®

Supplier: VWR Chemicals

Étalon de référence secondaire de solvant dans la GC, pour diverses applications chromatographiques et analytiques.

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Polystyrene standard ReadyCal set Mp 400-2000000, analytical standards for GPC

Supplier: Merck

Set contains 12 different polystyrene standards with Mp ~374, ~1620, ~3420, ~9130, ~18100, ~32500, ~67500, ~128000, ~246000, ~659000, ~1000000, ~2180000; always 4 standards are lyophilised in a 1,5 ml vial (green, red or white); for 1 complete calibration use one of each of the green, red and white vials; 1 set contains 30 vials for 10 complete calibrations.

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Reversed phase test mix 2, certified reference material, Supelco®

Supplier: Merck

HPLC Standard, Reversed Phase Test Mix 2, TraceCERT®, Supelco®, in acetonitrile: water (varied conc.) solution, Certified reference material, Info cdt: ampule of 1 mL

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Polyethylene glycol Standard ReadyCal Set Mp 200-1200000, for GPC, Supelco

Supplier: Merck

Set contains 10 different polyethylene glycol/polyethylene oxide standards with Mp ~194, ~970, ~2010, ~4450, ~15000, ~22100, ~62000, ~217000, ~490000, ~1190000; always 3 or 4 standards are lyophilised in a 1,5 ml vial (black, blue or yellow); for 1 complete calibration use one of each of the black, blue and yellow vials; 1 set contains 30 vials for 10 complete calibrations.

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HPLC gradient system diagnostics mix, in methanol: water (3:2) (varied concentration), certified reference material, Supelco®

Supplier: Merck

This formulation is designed for evaluating how reliably a chromatographic system is providing such fundamentally important parameters as flow rate, proportioning, and mixing.

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Dimethylpolysiloxane set of analytical standards, molecular weight series

Supplier: Merck

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

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Poly(butylmethacrylate), analytical standard, for GPC

Supplier: Merck

GPC Standard, ∼682000 Mn, Mw/Mn ~1,06, Supelco®

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Nucleosides test mix, analytical standard, Supelco®

Supplier: Merck

HPLC Standard, Nucleosides Test Mix, Supelco®, in 1% sodium formate (varied conc.), Analytical standard, Info cdt: ampule of 1 mL

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Poly(dimethylsiloxane), average Mw 95000 (Typical), average Mn 50000 (Typical), analytical standard, Supelco®

Supplier: Merck

GPC Standard, Poly(dimethylsiloxane), average Mw 95000 (Typical), average Mn 50000 (Typical), Supelco®, Analytical standard

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Polar column test mix, certified reference material, Supelco®

Supplier: Merck

Polar Column Test Mix, TraceCERT®, Supelco®, 500 mug/mL each component in dichloromethane, Certified reference material, Info cdt: ampule of 2 mL

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Test mixture 2 for apolar capillary columns according to Grob, for GC

Supplier: Merck

Standard for GC, Test mixture 2 for apolar capillary columns according to Grob, Supelco®, ready-to-use

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Poly(Bisphenol A carbonate), analytical standard, Supelco®

Supplier: Merck

GPC Standard, Poly(Bisphenol A carbonate), Supelco®, Analytical standard

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VWR® PESTINORM®, Gas Chromatography (GC) Certified Reference Material

VWR® PESTINORM®, Gas Chromatography (GC) Certified Reference Material

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.

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N,N-diméthylacétamide, étalon de référence secondaire pour la GC, PESTINORM®

N,N-diméthylacétamide, étalon de référence secondaire pour la GC, PESTINORM®

Supplier: VWR Chemicals

Étalon de référence secondaire de solvant dans la GC, pour diverses applications chromatographiques et analytiques.

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Diméthylsulfoxyde (DMSO), étalon de référence secondaire pour la GC, PESTINORM®

Diméthylsulfoxyde (DMSO), étalon de référence secondaire pour la GC, PESTINORM®

Supplier: VWR Chemicals

Étalon de référence secondaire de solvant dans la GC, pour diverses applications chromatographiques et analytiques.

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LiChroTest®, Supelco®

Supplier: Merck

Standard samples for HPLC System Qualification.

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Programmed test mix, in dichloromethane (varied conc.), certified reference material, Supelco®

Supplier: Merck

This test mix is based on the comprehensive mix developed by Grob (Grob, et al., J. Chromatogr. 156 (1978) p. 1)

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Poly(dimethylsiloxane) analytical standard, for GPC

Supplier: Merck

Poly(dimethylsiloxane) [PDMS] is a polymer. It is a stable silicone rubber. It has been used as ion selective membrane for ion-sensitive field-effect transistors, as spring material in accelerometers, elastomer on a tactile sensor and as flexible encapsulation material in decouple sensors.

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Poly(acrylic acid), average Mn 130000 (Typical), analytical standard, Supelco®

Supplier: Merck

GPC Standard, Poly(acrylic acid), average Mn 130000 (Typical), Supelco®, Analytical standard

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