Chemicals and reagents

Хромотропова киселина динатриева сол дихидрат С433

Europe

Основно вещество мин. 99%

За изследване на:
Ag, ClO3-, Cr, Hg, NO2-, NO32-, Ti

Hydrochloric Acid-Alcohol - Mixture (0.75 % HCl) solution for clinical diagnostics 257097

itwreagents

Hydrochloric Acid-Alcohol - Mixture (0.75 % HCl) solution for clinical diagnostics
Specifications: Hydrochloric Acid: 0.75 %

Methanol (Reag. Ph. Eur.) for HPLC gradient / UHPLC supergradient, ACS 221091

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Minimum assay (G.C.): 99.9%
Identity: IR passes test
Density 20/4: 0.791-0.792
Suitability: for gradient acc. to ACS: passes test
Maximum limit of impurities
APHA colour: 10
Acidity: 0.0002 meq/g
Alkalinity: 0.0002 meq/g
Insoluble matter in H2O: passes test
Non-volatile matter: 0.0002 %
Reducing substance to KMnO4: passes test
Darkened substances by H2SO4: passes test
Carbonyl compounds (as CH3COCH3): 0.001%
Base line drift (235 nm): 15 mUA
Water (H2O): 0.03 %
Gradient at 235 nm: 2 mUA
Gradient at 254 nm: 1 mUA
Fluorescence at 254 nm (as quinine): 1 ppb
Fluorescence at 365 nm (as quinine): 0.5 ppb
UV Spectrum (1cm cell; Ref.: water):
Transmittance at 205 (Cut off) nm: ≥10%
Transmittance at 210 nm: ≥30%
Transmittance at 220 nm: ≥60%
Transmittance at 230 nm: ≥80%
Transmittance at 240 nm: ≥90%
Transmittance at 260-400 nm: ≥98%
Data of interest in HPLC:
Rohrschneider Polarity: 5.1
Eluotropic value e° (Al2O3): 0.95
Sol. H2O in solv. at 20°C: miscible
Microfiltered product (0.2 μm) and bottled under nitrogen atmosphere.
Conforms to Methanol R1 and R2 according to Reag. Ph. Eur.

1,2-Diaminocyclohexane-N,N,N,N'-tetraacetic acid for synthesis 133534

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Different packaging sizes

1-(2-Pyridylazo)-2-naphthol (PAN) 107531

MERCK

Absorption maximum: 461-465
Melting point: 136-141
Identity: confirmed

Gill's hematoxylin III solution 2711

Europe

Form: liquid
IVD: for in vitro diagnostic use
pH 2.5 (20 °C in H2O)
Density: 1.07 g/cm3 at 20 °C
Application: hematology, histology
Storage temperature: 15-25°C
Packaging: 1 l

Potassium Chlorate (Reag. Ph. Eur.) for analysis, ACS 131493

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Panreac 131493

Maximum limit of impurities
Insoluble matter in H2O: 0.005 %
Chloride (Cl): 0.001%
Nitrogen compounds (as N): 0.001%
Sulfate (SO4): 0.002%
Bromate (BrO3): 0.015%
Heavy metals (as Pb): 0.0005%

Sodium chloride solution for 1000 ml, c(NaCl) = 0.1 mol/l (0.1 N) Titrisol® 109945

МЕRCK 1.09945

Sodium nitrate С276.1

Main substance: 99.0-100.5%
pH of 5% p-p 5.5-8.0
Chlorides: 0.0005%
Sulfates: 0.003%
Iron: 0.0003%

Sodium nitrate С276

wholesale

Medical consumables