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TLC sprayer

Catalog Number: (1.08540.0001)

Supplier: Merck

Description: The Merck TLC sprayer allows derivatisation reagents to be sprayed homogeneously onto developed chromatograms. It is equipped with two different spray heads, (0,8 and 1,25 mm), that are optimised for low and high viscosity solutions respectively. The electro-pneumatically operated sprayer uses compressed air-driven by accumulator power and inductive charging.

UOM: 1 * 1 items

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

Supplier: Merck

Description: 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. Merck declares their 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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Water, EMSURE® for analysis, Supelco®

Supplier: Merck

Description: 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. 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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Elemental impurities - Certified Reference Materials for ICH Q3D, USP 232, USP 2232, and Ph.Eur. 5.20

Supplier: Merck

Description: For the new adapted USP <232> and Ph.Eur.Suppl. 9.3 chapters, Merck offers TraceCERT® element mixes with element ratio corresponding to the oral concentrations of the ICH Q3D guideline, Standard 1 is a mix which covers class 1, 2A and some of 2B elements; Standard 2 is a mix which covers the remaining 2B class elements; Standard 3 is a mix which covers all class 3 elements.

HPTLC and GLP plates, silica gel 60, unmodified layers, glass backed

Supplier: Merck

Description: HPTLC plates, unmodified silica gel 60
This range of plates uses an optimised Merck silica gel 60 with a particle size of only 5 to 6 µm, which results in higher packing density and a smoother surface, therefore, reducing band diffusion. Less sample is required, 0,1 to 0,5 µl than for classic TLC.

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Spectroquant® PhotoCheck, Supelco®

Catalog Number: (1.14693.0001)

Supplier: Merck

Description: The PhotoCheck test set is designed for testing the wavelength accuracy of all Merck photometers and spectrophotometers. It can be used as a secondary standard for testing instruments according to DIN/ISO 9000 and ISO 14000. The stable colour solutions can be used to test the following spectrophotometer filters and wavelength settings: 445 and 446 nm, 520 and 525 and 690 nm. The accuracy of the wavelength setting and the linearity of the extinction measurement is checked with four solutions per wavelength. The traceability of these test solutions to international standards is guaranteed by examining them in a reference photometer that is checked against the primary standard (NIST standard). These values are properly documented and supplied as part of the set.

UOM: 1 * 1 SET

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TLC and GLP plates, silica gel 60, unmodified layers, glass backed

Supplier: Merck

Description: TLC plates, unmodified silica gel 60
Merck silica gel 60 has a unique polymeric binder that results in a uniform, hard surface that will not easily crack or blister. This smooth, extremely dense plate coating ensures narrow bands and maximum separation efficiency with the lowest background noise. Layer thickness 250 μm and particle size of 10 to 12 µm. Two inorganic fluorescent indicators for UV detection of colourless substances.

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Withdrawal systems for barrels and drums

Supplier: Merck

Description: Merck offers a broad variety of withdrawal systems that are tailor-made for barrels and drums. They are designed to ensure safe, easy and efficient solvent withdrawal-even of residual quantities-while meeting all relevant safety regulations.
The integrated solvent supply systems directly connect the solvent to the instrument or product line where it is needed. We provide systems for manual pressure build-up as well as inert gas pressurising, supplemented by a comprehensive selection of reducers, adapters and couplings that allow easy interconnection of all components. This way the user can precisely manage his solvent flow and thus optimizes the processes-and at the same time minimizes risks for the employees and the environment.

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TLC plates, silica gel 60, unmodified and chemically modified layers, aluminium backed

Supplier: Merck

Description: 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.

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Culture media, Chromocult® and Fluorocult®

Supplier: Merck

Description: 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 <i>E. coli</i> 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 <i>E. coli</i> 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.

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