37175 Results for: "Merck"

Supplier: Merck

Ethyl octanoate for synthesis, Sigma-Aldrich®

Supplier: Merck

Glyoxylic acid 50% in aqueous solution, Sigma-Aldrich®

Supplier: Merck

3,5-Dinitrosalicylic acid for synthesis, Sigma-Aldrich®

Supplier: Merck

n-Undecane for synthesis, Sigma-Aldrich®

Supplier: Merck

Sodium benzoate, RonaCare®

Supplier: Merck

Sodium gluconate for synthesis, Sigma-Aldrich®

Supplier: Merck

Piperazine for synthesis, Sigma-Aldrich®

Supplier: Merck

Hydrochloric acid 0.5 mol/l (0.5 N), Titripur® Reag. USP volumetric solution, Supelco®

Supplier: Merck

These columns have been designed following the high demand for suitable analytical methods for process monitoring and quality control of wide pore biomolecules. Accurate analysis of proteins, antibodies and large peptides requires columns with good permeability, along with better mass transfer and selectivity. In order for size exclusion not to influence the separation, the pore size should be approximately ten times larger than the molecule being analysed.

Supplier: Merck

Sulphuryl chloride for synthesis, Sigma-Aldrich®

Supplier: Merck

Ethanol absolute, Uvasol® for spectroscopy, Supelco®

Supplier: Merck

Pore volume: 2,9 ml/g.

Supplier: Merck

Propylene carbonate, Msynth® plus, Sigma-Aldrich®

Supplier: Merck

Benzene, EMSURE® Reag. Ph. Eur., ACS, ISO for analysis

Supplier: Merck

Silver sulphate 10 g/l in sulphuric acid for COD determination, Supelco®

Supplier: Merck

Diammonium hydrogen citrate, EMSURE® ACS, Reag. Ph. Eur. for analysis, Supelco®

Supplier: Merck

Orthoboric acid, EMSURE® Reag. Ph. Eur., ISO for analysis, Supelco®

Supplier: Merck

n-Hexane, EMSURE® ACS, Reag. Ph. Eur. for analysis, Supelco®

Supplier: Merck

Sodium dichromate dihydrate, EMSURE® ACS for analysis, Supelco®

Supplier: Merck

Sodium hydrogen sulphate monohydrate

Supplier: Merck

Chromogenic media offer a method for rapid identification of characteristic bacterial enzymes. Merck offers a wide range of solid and liquid culture media that also permits the fluorescence detection of E. coli under the trade name Fluorocult®. Fluorocult® culture media have the same components as the standard media and additionally the substrate MUG. Some of the media also contain tryptophan as the substrate for a possible indole reaction to further confirm E. coli presence. The Fluorocult® method can produce a positive result within just 24 to 48 hours. In the case of the chromogenic media, a direct identification, using the characteristic colony colouring on the culture medium itself is possible without the application of further additives. A differentiation of positive single colonies is possible, even when high microbial counts are present.

Supplier: Merck

New fuchsine

Supplier: Merck

Formaldehyde ≥37% in aqueous solution stabilised for histology acid-, calcium carbonate-free, Sigma-Aldrich®

Supplier: Merck

Dragendorff's reagent, spray reagent for TLC, Supelco®

Supplier: Merck

Cadmium, coarse powder, EMSURE® ∼ 0.3-1.6 mm for analysis, suitable for filling of reductors, Supelco®

Supplier: Merck

Chloroform-[D₁] ≥99.8% (Isotopic) with TMS (0.03 vol.%) stabilised, MagniSolv™ for NMR spectroscopy, Sigma-Aldrich®

Supplier: Merck

Stainless steel LiChroCART® cartridges are available with various types of Superspher® sorbents.

Supplier: Merck

Stainless steel LiChroCART® cartridges are available with LiChrospher® sorbents. Ideal for separation of compounds under basic eluents.

Supplier: Merck

Stainless steel LiChroCART® cartridges are available with LiChrospher® sorbents. Ideal for separation of compounds under basic eluents.

Supplier: Merck

Stainless steel LiChroCART® cartridges are available with various types of Superspher® sorbents.