291221 Results for: "Merck"
Dansyl chloride, Sigma-Aldrich®
Supplier: Merck
Dansyl chloride, Sigma-Aldrich®
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Ammonium cerium(IV) nitrate 0.1 mol/l (0.1 N) in aqueous solution, Titripur® Reag. Ph Eur volumetric solution, Supelco®
Supplier: Merck
Ammonium cerium(IV) nitrate 0.1 mol/l (0.1 N) in aqueous solution, Titripur® Reag. Ph Eur volumetric solution, Supelco®
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Toluene, SupraSolv® for GC-ECD/FID, Supelco®
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.
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Sulphuric acid 0.05 mol/l (0.1 N) in aqueous solution, Titripur® volumetric solution, Supelco®
Supplier: Merck
Sulphuric acid 0.05 mol/l (0.1 N) in aqueous solution, Titripur® volumetric solution, Supelco®
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Zinc bromide for synthesis, Sigma-Aldrich®
Supplier: Merck
Zinc bromide for synthesis, Sigma-Aldrich®
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Lead standard solution, 10000 mg/L Pb in dil. nitric acid (from Pb(NO₃)₂) Certipur® standard for ICP, Supelco®
Supplier: Merck
Lead Standard, 10000 mg/L, Certipur®, Supelco®, Lead, Matrix: Nitric acid dil., Application: ICP standards
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Acetonitrile, EMSURE® ACS, Reag. Ph. Eur. for analysis, Supelco®
Supplier: Merck
EMSURE® grade solvents are suitable for a broad spectrum of classical lab applications, and are frequently used in regulated and highly demanding lab applications. Merck declare the EMSURE® range to be in compliance with the ACS, with the reagent part of the European Pharmacopoeia (Reag. Ph Eur) and also with the ISO standards.
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Silver standard solution, 1000 mg/L Ag in 0,5 M nitric acid (from AgNO₃) Certipur® standard for AAS, Supelco®
Supplier: Merck
Silver Standard, 1000 mg/L, Certipur®, Supelco®, Silver, Matrix: 0,5 M HNO₃, Application: AAS standards
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Hydrogen peroxide 30% stabilised, EMPROVE® ESSENTIAL Ph. Eur., BP, USP, SAFC®
Supplier: Merck
Contains 0,015 % Na₂H₂P₂O₇, 0,01 % H₃PO₄, 0,006 % NH₄NO₃ as preservatives.
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Bromocresol green ACS, Reag. Ph. Eur.
Supplier: Merck
Bromocresol green ACS, Reag. Ph. Eur.
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Ethyl acetate, LiChrosolv® for HPLC, Supelco®
Supplier: Merck
With their high degree of UV transmittance, low particle count, low acidity and alkalinity and low evaporation residue level, LiChrosolv® solvents are ideal for reproducible separations. Since separations are normally carried out under gradient conditions in analytical HPLC, we offer solvents in "gradient grade" as well as "isocratic grade". This enables to minimize the gradient effect of the solvent involved.
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Arsenic standard solution, 1000 mg/L As in 0,5 M nitric acid (from H₃AsO₄), Certipur® standard for AAS, Supelco®
Supplier: Merck
Arsenic Standard, 1000 mg/L, Certipur®, Supelco®, Arsenic, Matrix: 0,5 M HNO₃, Application: AAS standards
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Sulphuric acid 98%, LiChropur™ for HPLC, Supelco®
Supplier: Merck
Sulphuric acid 98%, LiChropur™ for HPLC, Supelco®
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Gallium standard solution, 1000 mg/L Ga in dilute nitric acid (from Ga(NO?)?) Certipur® standard for ICP, Supelco®
Supplier: Merck
Gallium Standard, 1000 mg/L, Certipur®, Supelco®, Gallium, Matrix: 2-3% HNO₃, Application: ICP standards
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Test kits, TOC, Spectroquant®, Supelco®
Supplier: Merck
All Spectroquant® test kits can be used with the Prove range of spectrophotometers and Nova 60/60A instruments. Tests can be used not only on photometers and spectrophotometer from Merck, but also on photometers and spectrophotometers from other suppliers (programming details available on request).
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2,3-Dimercapto-1-propanol for synthesis, Sigma-Aldrich®
Supplier: Merck
2,3-Dimercapto-1-propanol for synthesis, Sigma-Aldrich®
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HPLC columns, Chromolith®
Supplier: Merck
Monolithic silica technology: A new age in chromatography. Chromolith® columns are based on silica so existing methods can be easily transferred with only minimal investment in new method development work. 'Sol-Gel' technology allows highly porous monolithic rods of silica to be formed. These feature a bimodal pore structure provides a unique combination of macropores and mesopores.
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Sodium hydroxide 0.5 mol/l (0.5 N) in aqueous solution 0.5 mol/l (0.5 N) in aqueous solution, Titripur® volumetric solution, Supelco®
Supplier: Merck
Sodium hydroxide 0.5 mol/l (0.5 N) in aqueous solution 0.5 mol/l (0.5 N) in aqueous solution, Titripur® volumetric solution, Supelco®
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HPLC columns, Chromolith® DIOL
Supplier: Merck
Chromolith® DIOL columns are useful as an intermediate polarity media between C18 and silica. Diol functionalised media is less polar and can have different selectivity. Chromolith® DIOL can be used with a wide range of solvents in both normal and reverse phases. In normal phase mode, the diol phase provides an alternative selectivity compared to silica whilst additionally demonstrating longer retention times that help to obtain separation. In reverse phase mode, compounds such as water-soluble vitamins, sugars or amino acids are easily baseline separated using simple mobile phases. Chromolith® DIOL columns have long lifetimes within pH range of 2,5 to 7,5, high matrix tolerance and speed of analysis.
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Standard reference materials and buffer solutions, CertiPUR®, Supelco®
Supplier: Merck
Materials for the precise calibration and monitoring of pH instruments.
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1,2-Dihydroxybenzene-3,5-disulphonic acid disodium salt monohydrate, Millipore®
Supplier: Merck
1,2-Dihydroxybenzene-3,5-disulphonic acid disodium salt monohydrate, Millipore®
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Acetonylacetone for synthesis, Sigma-Aldrich®
Supplier: Merck
Acetonylacetone for synthesis, Sigma-Aldrich®
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Ammonium iron(II) sulphate hexahydrate, EMSURE® for analysis, Supelco®
Supplier: Merck
Ammonium iron(II) sulphate hexahydrate, EMSURE® for analysis, Supelco®
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Diphosphorus pentoxide ACS, ISO, Reag. Ph. Eur. analytical reagent, Supelco®
Supplier: Merck
Diphosphorus pentoxide ACS, ISO, Reag. Ph. Eur. analytical reagent, Supelco®
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Methanol, LiChrosolv® tested for UHPLC-MS, Supelco®
Supplier: Merck
Highest purity solvents for UHPLC-MS analysis.
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(±)-2-Methylenanthic acid for synthesis, Sigma-Aldrich®
Supplier: Merck
(±)-2-Methylenanthic acid for synthesis, Sigma-Aldrich®
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Strontium standard solution, 1000 mg/L Sr in dil. nitric acid (from Sr(NO₃)₂) Certipur® standard for ICP, Supelco®
Supplier: Merck
Strontium Standard, 1000 mg/L, Certipur®, Supelco®, Strontium, Matrix: Nitric acid dil., Application: ICP standards
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Lead(II) acetate basic, anhydrous, EMSURE® for the analysis of sugar acc. to horne, Supelco®
Supplier: Merck
Lead(II) acetate basic, anhydrous, EMSURE® for the analysis of sugar acc. to horne, Supelco®
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Benzoic acid, Certipur® Reag. USP, Reag. Ph. Eur. volumetric standard, secondary reference material for alkalimetry, traceable to NIST Standard Reference Material (SRM), Supelco®
Supplier: Merck
Benzoic acid, Certipur® Reag. USP, Reag. Ph. Eur. volumetric standard, secondary reference material for alkalimetry, traceable to NIST Standard Reference Material (SRM), Supelco®