353 Results for: "EUPROMOCLEARANCECHEM00001"
TLC plates, silica gel 60, unmodified and chemically modified layers, aluminium backed
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.
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Sodium dihydrogen phosphate monohydrate 90.0-102.0% (by alkalimetry), EMSURE® ACS, Reag. Ph. Eur. for analysis, Supelco®
Supplier: Merck
Sodium dihydrogen phosphate monohydrate 90.0-102.0% (by alkalimetry), EMSURE® ACS, Reag. Ph. Eur. for analysis, Supelco®
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Trisodium phosphate dodecahydrate, EMSURE® ACS, Reag. Ph. Eur. for analysis, Supelco®
Supplier: Merck
Trisodium phosphate dodecahydrate, EMSURE® ACS, Reag. Ph. Eur. for analysis, Supelco®
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Dipotassium hydrogen orthophosphate trihydrate, EMSURE® for analysis, Supelco®
Supplier: Merck
Dipotassium hydrogen orthophosphate trihydrate, EMSURE® for analysis, Supelco®
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tri-Sodium citrate dihydrate, BAKER ANALYZED®, Laboratory Reagent, J.T.Baker®
Supplier: Avantor
tri-Sodium citrate dihydrate, BAKER ANALYZED®, Laboratory Reagent, J.T.Baker®
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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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Disodium hydrogen phosphate dihydrate ≥99.5% (by acidimetry), EMSURE® for analysis, Supelco®
Supplier: Merck
Disodium hydrogen phosphate dihydrate ≥99.5% (by acidimetry), EMSURE® for analysis, Supelco®
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Aqueous mounting medium Aquatex®, Sigma-Aldrich®
Supplier: Merck
Aquatex is used for e.g. LEUCOGNOST stained specimens. For preservation purposes and subsequent optimal microscopy, the stained sections are normally mounted using a suitable mounting agent and covered with a cover glass.
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Liquid-liquid extraction, EXtrelut® NT
Supplier: Merck
EXtrelut® NT is a specially processed, inert, wide pore kieselguhr with a high pore volume. It has been used for quite some time within research, for the sample preparation of urine, whole blood, plasma and other biological matrices. Other applications include environmental and residue testing such as analysis of industrial, domestic and wastewater. EXtrelut® NT is supplied either pre-packed in cartridges or as a loose sorbent. EXtrelut® NT simplifies liquid-liquid extraction by replacing separation funnels. Using a single step is more efficient, saves solvent, as well as material and time, in contrast to classic funnel separation. The aqueous sample is simply applied to the EXtrelut® NT sorbent. It distributes itself over the chemically-inert matrix so acting as a stationary phase. Subsequently, elution takes place using organic solvents that are non miscible with water. All the lipophilic substances are extracted from the aqueous into the organic phase.
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Non-aqueous DPX mounting medium
Supplier: Merck
DPX new is a synthetic non aqueous mounting medium for microscopy. In its formulation, the teratogenic plasticiizer dibutyl phthalate (DBP) has been avoided, which renders the composition safer for the environment and more user friendly than the conventionally used mounting agents such as DPX.
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Ethylene glycol ≥99.5% (by GC), EMSURE® Reag. Ph. Eur., Reag. USP for analysis
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.
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Sodium molybdate(VI) dihydrate, EMSURE® ACS, Reag. Ph. Eur. for analysis, Supelco®
Supplier: Merck
Sodium molybdate(VI) dihydrate, EMSURE® ACS, Reag. Ph. Eur. for analysis, Supelco®
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Methanol ≥99.9% (by GC), LiChrosolv® Reag. Ph. Eur., gradient grade for liquid chromatography, 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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tri-Sodium citrate dihydrate, EMSURE® ACS, ISO, Reag. Ph. Eur. analytical reagent, Supelco®
Supplier: Merck
tri-Sodium citrate dihydrate, EMSURE® ACS, ISO, Reag. Ph. Eur. analytical reagent, Supelco®
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Haematoxylin monohydrate, Certistain® for microscopy, Sigma-Aldrich®
Supplier: Merck
Hematoxylin-Monohydrat (C.I. 75290) Certistain® is a dye for the specific staining of DNA in the nuclei. It is used in cytology and histology. Nuclei are stained blue, dark violet to black. Hematoxylins are mixed with trivalent positively charged metal salts and build up the so-called hematoxylin lakes, used for the selective staining of nuclei (DNA). Certistain® is the quality group for seleceted high quality dyes that fulfill all quality requirements for IVD and CE registration.
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VWR® TITRINORM®, pH Buffers, for Karl Fischer Titrations
Supplier: VWR Chemicals
The volumetric and coulometric reagents are buffered systems, stabilised around the ideal value between 5 to 7 ensuring a rapid and stoichiometric course of reaction. Buffering systems which neutralise and stabilise the pH during the reaction are suitable for this purpose.
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Disodium hydrogen phosphate dodecahydrate 98.5-102.5% (by acidimetry), crystals, EMSURE® Ph. Eur., BP, JP, USP, Supelco®
Supplier: Merck
Disodium hydrogen phosphate dodecahydrate 98.5-102.5% (by acidimetry), crystals, EMSURE® Ph. Eur., BP, JP, USP, Supelco®
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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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HPLC columns, Purospher® STAR RP-18 endcapped
Supplier: Merck
Fast method development of complex samples across the pH range from 1,5 to 10,5 with different mobile phases and temperature conditions.
Purospher® STAR RP-18 endcapped HPLC columns are designed for universal use. Basic, neutral and metal-chelating compounds can easily be separated with simple mobile phases – naturally without peak tailing. Thanks to its outstanding performance and stability, Purospher® STAR RP-18 endcapped offers maximum flexibility in method development. Robust methods can be developed over the entire pH range from 1,5 to 10,5. High pH-stability allows the separation of strongly basic compounds with alkaline eluents. The combination of high purity silica, best all-round retention characteristics, outstanding pH stability up to pH 10,5, and suitability for up to 100% aqueous mobile phases, make Purospher® STAR RP-18 endcapped an all-round top performance column, almost universal in its range of applications.
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Reagents for Karl Fischer titrations, Aquastar®, Supelco®
Supplier: Merck
The Aquastar® range is designed to provide reagents for the determination of water by Karl Fischer titration of a wide range of substrates and by a variety of methodologies. These include reagents for one- or two-component systems; combined coulometric reagents; solvents for oils and fats; reagents and solvents for determination of water in ketones and aldehydes. Calibration standards are also available.
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EDTA disodium salt dihydrate, BAKER ANALYZED®, Laboratory Reagent, J.T.Baker®
Supplier: Avantor
EDTA disodium salt dihydrate, BAKER ANALYZED®, Laboratory Reagent, J.T.Baker®
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Titriplex® III ACS, ISO, Reag. Ph. Eur. analytical reagent, Supelco®
Supplier: Merck
Titriplex® III ISO, ACS, Reag. Ph. Eur. analytical reagent, Supelco®
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L(+)-Potassium sodium tartrate tetrahydrate, EMSURE® ACS, ISO, Reag. Ph. Eur. for analysis, Supelco®
Supplier: Merck
L(+)-Potassium sodium tartrate tetrahydrate, EMSURE® ACS, ISO, Reag. Ph. Eur. for analysis, Supelco®