23980 Results for: "Merck"

Supplier: Merck

Titrisol® buffer concentrate for 500 ml buffer solution [20 °C].

Supplier: Merck

Strontium Standard, 1000 mg/L, Certipur®, Supelco®, Strontium, Matrix: Nitric acid dil., Application: AAS standards

Supplier: Merck

NutriSelect^® prime tryptic soy broth halal is designed as a combination of two peptones, enzymatic digest of casein and of soy-bean, which provides a high nutrition by supplying organic nitrogen, amino acids, and longer-chained peptides. The osmotic balance is maintained by sodium chloride and dipotassium phosphate acts as a buffer. NutriSelect^® prime tryptic soy broth halal is used for the isolation and cultivation of a wide range of microorganisms from test samples.

Supplier: Merck

Water, Tracepur® for inorganic trace analysis, Supelco®

Supplier: Merck

Thiourea ACS, Reag. Ph. Eur. analytical reagent, Supelco®

Supplier: Merck

Dihexylamine for synthesis, Sigma-Aldrich®

Supplier: Merck

D-(+)-Sucrose Reag. Ph. Eur., Millipore®

Supplier: Merck

Iron(II) chloride tetrahydrate, EMSURE® for analysis, Supelco®

Supplier: Merck

Propylamine for synthesis, Sigma-Aldrich®

Supplier: Merck

Sodium periodate, EMSURE® Reag. Ph. Eur., ACS for analysis, Supelco®

Supplier: Merck

L(+)-Leucine, Millipore®

Supplier: Merck

Hydroquinone for synthesis, Sigma-Aldrich®

Supplier: Merck

Copper Standard, 1000 mg/L, Titrisol®, Supelco®, Copper, Matrix: H₂O, Application: AAS standards

Supplier: Merck

1-Naphthylamine for synthesis, Sigma-Aldrich®

Supplier: Merck

Ethyl acetoacetate for synthesis, Sigma-Aldrich®

Supplier: Merck

2-Phenylethanol for synthesis, Sigma-Aldrich®

Supplier: Merck

Merck products offer high quality for applications in the microbiology field.

Supplier: Merck

tert-Butyl methyl ether for synthesis, Supelco®

Supplier: Merck

Work with ease and filter with confidence with Stericup® and Steritop® filtration systems. The Stericup® E and Steritop® E sterile filters have been designed to reduce plastic and packaging.

Supplier: Merck

Acetonitrile, anhydrous (max. 0.001% H₂O)

Supplier: Merck

Sodium hydroxide 1 mol/l (1 N) in aqueous solution, Titripur® Reag. USP, Reag. Ph. Eur. volumetric solution, Supelco®

Supplier: Merck

Merck Multiformat plates are pre-scored glass plates for easy breaking into various sizes. The plates use the same silica coating as the corresponding TLC or HPTLC plate delivering chromatograms that are identical to those of the non scored plates.

Supplier: Merck

TLC plates, unmodified silica gel 60
This range of plates uses Merck silica gel 60 with a unique polymeric binder that results in a uniform, hard surface that will not easily crack or blister. The smooth, extremely dense plate coating ensures narrow bands and maximum separation efficiency with the lowest background noise. Layer thickness 200 μm and, particle size of 10 to 12 µm. Flexible aluminium plates that can easily be cut to match individual separation requirements. Two inorganic fluorescent indicators for UV detection of colourless substances. Samples which absorb shortwave UV at 254 nm are detected due to fluorescence quenching.

Supplier: Merck

Selective medium for the detection of Enterobacter sakazakii in milk powder and powdered infant formula. The base in Chromocult ® Enterobacter sakazakii agar allows good growth and strong colour formation of E. sakazakii colonies. The addition of inhibitors and the incubation temperature of 44 °C largely reduce the growth of the majority of gram-positive and gram-negative accompanying flora. E. sakazakii  is ß-D-glucosidase positive and grows as blue-green colonies on this medium. Incubation: 24 ±2 hours at 44 ±1 °C. Incubation temperature has a strong influence on sensitivity and selectivity of this method. Temperatures higher than 45 °C will inhibit the growth of E.sakazakii. Temperatures below 43 °C will reduce inhibition of accompanying bacteria.

Supplier: Merck

Sodium azide

Supplier: Merck

Urea ACS, Reag. Ph. Eur. analytical reagent, Supelco®

Supplier: Merck

Dimethyl disulphide for synthesis, Sigma-Aldrich®

Supplier: Merck

Dibutylamine for synthesis, Sigma-Aldrich®

Supplier: Merck

Itaconic acid for synthesis, Sigma-Aldrich®

Supplier: Merck

2-Bromethylamine hydrobromide for synthesis, Sigma-Aldrich®