Supplier: Merck

The presence or absence of enzyme activity is a taxonomic property of microorganisms and can be used for their differentiation or identification.

Supplier: Merck

Sodium borohydride, fine-granular for synthesis, Sigma-Aldrich®

Supplier: Merck

Test strips for the reflectometers RQflex® 10, RQflex® 10 plus and RQflex® 20.

Supplier: Merck

Rectangular cuvette, Nova & Picco, Optical glass, Path length: 10 mm

Supplier: Merck

Stainless steel Hibar® columns are complete with endfittings. These columns are available with various types of LiChrospher® sorbents.

Supplier: Merck

p-Xylene reference substance for gas chromatography, Supelco®

Supplier: Merck

Zinc sulphate 0.1 mol/l (0.1 N) in aqueous solution, Titripur® Reag. Ph. Eur. volumetric solution, Supelco®

Supplier: Merck

Quick tests, visual colour comparison.

Supplier: Merck

trans-Anethole, Sigma-Aldrich®

Supplier: Merck

Zinc chloride, EMSURE® Reag. Ph. Eur., ACS, ISO for analysis, Supelco®

Supplier: Merck

Coupling TLC plates to mass spectrometry is a new field of high interest, which will contribute strongly to the progress of planar chromatography. The MS-grade plates are much cleaner than standard TLC/HPTLC plates providing higher sensitivity and reduced background signals. This allows trace analysis with mass spectrometry detection in lower nanogram range.

Supplier: Merck

Hafnium Standard, 1000 mg/L, Certipur®, Supelco®, Hafnium, Matrix: 7% HCl, Application: ICP standards

Supplier: Merck

(±)-Mercaptosuccinic acid for synthesis, Sigma-Aldrich®

Supplier: Merck

Chlorosulphuric acid, Msynth® plus, Sigma-Aldrich®

Supplier: Merck

Titriplex® III solution c (Na₂-EDTA , 2 H₂O) = 0,1 mol/l, Titripur® Reag. Ph. Eur. for metal titration, Supelco®

Supplier: Merck

Bis(2-ethylhexyl)phosphate for synthesis

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 minimises the gradient effect of the solvent involved.

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). Spectroquant® cell test kits.

Supplier: Merck

Sodium carbonate solution 0.05 mol/l (0.1 N), Titripur®, Supelco®

Supplier: Merck

Ammonium sulphate, EMSURE® Reag. Ph. Eur., ISO for analysis, Supelco®

Supplier: Merck

D-(+)-Glucose monohydrate, Millipore®

Supplier: Merck

Ferrocene for synthesis, Sigma-Aldrich®

Supplier: Merck

n-Pentane ≥99.8%, SupraSolv® for GC-ECD/FID, 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. EMSURE® provides worldwide best and most extensive product specifications. We declare our 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.

Supplier: Merck

Soluble in water and mineral acids; insoluble in organic solvents.

Supplier: Merck

All the individual steps associated with solid phase extraction can be carried out using the LiChrolut® extraction unit. This transparent and vacuum-suitable unit, made of glass, can be used to prepare up to 12 samples simultaneously.

Supplier: Merck

Pyridine-2,6-dicarboxylic acid for synthesis, Sigma-Aldrich®

Supplier: Merck

Mercury (II) oxide, red for analysis, Supelco®

Supplier: Merck

Accurate analytic results in UV/Vis and infrared spectroscopy depend on the use of very pure solvents for sample preparation. The Uvasol® solvents range has been specially designed for spectroscopy and other applications requiring solvents of the highest spectral purity. The refinement process allows a greater degree of security in applications and avoids misinterpretation of analytical results caused by traces of UV, IR and fluorescence contamination. Uvasol® solvents offer best UV transmittance. In all specifications the minimum transmittance for five typical wavelengths are identified. Furthermore the transmittance is specified in accordance with Reag. Ph. Eur. and ACS.

Supplier: Merck

Benzyl chloride for synthesis, Sigma-Aldrich®