Spectromelt® A 12 66% di-lithium tetraborate/34% lithium metaborate for XRF (X-ray fluorescence), Supelco®
Supplier: Merck
Spectromelt is based on lithium borates for fluxing digestion as granulate or as fused material used for X-ray fluorescence analysis (XRF).
The fused particles are spherical, have a small particle size distribution and a higher bulk density.
The material is easy to handle and has a low loss on ignition.
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Petrolether, 40…60 °C, Suprasolv® hypergrade for organic trace analysis, Supelco®
Supplier: Merck
SupraSolv® ECD and FID is specially developed for gas chromatography in combination with ECD (Electron Capture Detetor) and FID (Flame Ionization detector). SupraSolv® solvents offer the largest specified retention time range, a clear baseline and a minimal signal-to-noise ratio leading to reliable and reproducible analysis results.
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Kyselina šťavelová, anhydrous for synthesis, Sigma-Aldrich®
Supplier: Merck
Kyselina šťavelová, anhydrous for synthesis, Sigma-Aldrich®
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Visual colour kits, nitrate, MQuant®, Supelco®
Supplier: Merck
Quick tests for visual colour comparison.
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Ethanol denatured, EMSURE® p.a. (denatured with 1% MEK), Supelco®
Supplier: Merck
Rozpouštědla třídy EMSURE® jsou vhodná pro široké spektrum klasických laboratorních aplikací a jsou často používána v regulovaných a vysoce náročných laboratořích. EMSURE® poskytuje celosvětově nejlepší a nejrozsáhlejší specifikace produktu. Prohlašujeme, že náš sortiment EMSURE® je v souladu s předpisy ACS, reagenční část Evropského lékopisu (Reag. Ph Eur) a rovněž s normami ISO.
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Ammonium iron(II) sulphate 0.1 mol/l concentrated aqueous solution, Titrisol®, Supelco®
Supplier: Merck
Ammonium iron(II) sulphate 0.1 mol/l concentrated aqueous solution, Titrisol®, Supelco®
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Nitrite standard solution, concentrate, 1000 mg NO₂- in Water, Titrisol®, Supelco®
Supplier: Merck
Nitrite standard solution, concentrate, 1000 mg NO₂- in Water, Titrisol®, Supelco®
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hořčík ≥99.5%, foil, Width: 3 mm, Thickness: 0.15-0.30 mm, Supelco®
Supplier: Merck
hořčík ≥99.5%, foil, Width: 3 mm, Thickness: 0.15-0.30 mm, Supelco®
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Test kits, COD cell test, 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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Toluen ≥99.8%, SupraSolv® for GC-MS
Supplier: Merck
Toluen ≥99.8%, SupraSolv® for GC-MS
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Visual colour kits, fluoride, MQuant®, Supelco®
Supplier: Merck
Quick tests, visual colour comparison.
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Hydrochinonmonomethylether for synthesis, Sigma-Aldrich®
Supplier: Merck
Hydrochinonmonomethylether for synthesis, Sigma-Aldrich®
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N,N,N',N'-Tetramethyl-p-fenylendiaman dihydrochlorid for synthesis, Sigma-Aldrich®
Supplier: Merck
N,N,N',N'-Tetramethyl-p-fenylendiaman dihydrochlorid for synthesis, Sigma-Aldrich®
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HPLC columns, SeQuant® ZIC®-cHILIC
Supplier: Merck
ZIC®-cHILIC is based on the same technology platform as ZIC®-HILIC, but has a different functional group and an improved manufacturing procedure. The different charge orientation of the zwitterionic functional group leads to a different – and complementary – selectivity for polar hydrophilic compounds. This selectivity is especially beneficial for hydrophilic compounds that are negatively charged, positively charged, zwitterionic or neutral, for example, organic acids, amino acids, metabolites, aminoglycosides and nucleotides.
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Kyselina mravenčí 98-100% (by alkalimetry), LiChropur™ for HPLC, Supelco®
Supplier: Merck
Kyselina mravenčí 98-100% (by alkalimetry), LiChropur™ for HPLC, Supelco®
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1,3-Dibutyl-2-thiourea, Sigma-Aldrich®
Supplier: Merck
1,3-Dibutyl-2-thiourea, Sigma-Aldrich®
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2-Thiouracil for synthesis, Sigma-Aldrich®
Supplier: Merck
2-Thiouracil for synthesis, Sigma-Aldrich®
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Sodium toluene-4-sulphonate for synthesis, Sigma-Aldrich®
Supplier: Merck
Sodium toluene-4-sulphonate for synthesis, Sigma-Aldrich®
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2-Propanol, SupraSolv® for gas chromatography, Supelco®
Supplier: Merck
2-Propanol, SupraSolv® for gas chromatography, Supelco®
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1-Propanol, EMSURE® ACS, Reag. Ph. Eur. p.a., 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.
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Silver tetrafluoroborate for synthesis, Sigma-Aldrich®
Supplier: Merck
Silver tetrafluoroborate for synthesis, Sigma-Aldrich®
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4,5-Difluorophthalic anhydride, Sigma-Aldrich®
Supplier: Merck
4,5-Difluorophthalic anhydride, Sigma-Aldrich®
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1,3-Dimethyltetrahydropyrimidin-2(1H)-on, Sigma-Aldrich®
Supplier: Merck
1,3-Dimethyltetrahydropyrimidin-2(1H)-on, Sigma-Aldrich®
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Formaldehyde ≥37% vodný roztok stabilizovaný, GR ACS, Reag. Ph. Eur. analytical reagent, Sigma-Aldrich®
Supplier: Merck
—Formaldehyde (HCOH) is one of the most familiar and effective fixatives. The fixation of the histological specimen material of human or animal origin is commonly performed in a 4% or 10% Formaldehyde solution. Chemically, the 4 % Formaldehyde solution equals a 10 % Formalin solution. The Formaldehyde solution min. 37% is a stock solution that is used for histology and can be diluted with e.g. PBS to 4% ready-to-use fixation solution.
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Methylmetakrylát stabilizovaný for synthesis, Sigma-Aldrich®
Supplier: Merck
Methylmetakrylát stabilizovaný for synthesis, Sigma-Aldrich®
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3-Methyl-1,2-cyclopentanedione for synthesis, Sigma-Aldrich®
Supplier: Merck
3-Methyl-1,2-cyclopentanedione for synthesis, Sigma-Aldrich®
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m-Toluidine for synthesis, Sigma-Aldrich®
Supplier: Merck
m-Toluidine for synthesis, Sigma-Aldrich®