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Potassium dichromate solution
c(K2Cr2O7) = 1/60 mol; standardised against silver nitrate solution, Titripur®
c(K2Cr2O7) = 1/24 mol/l (0.25 N), Titripur®
certified reference material for titrimetry, certified by BAM, ≥99.5%
Hellma® liquid calibration standards set
UV20, UV40, UV60, UV80, UV100, UV14, for testing the linearity of the absorption
UV60, UV600, UV14, for testing the photometric accuracy
99.98% trace metals basis
volumetric standard, secondary reference material for redox titration, traceable to NIST SRM Certipur® Reag. USP
Hellma® liquid calibration standards
UV60, for testing the photometric accuracy
Hellma® calibration standard Holmium Oxide glass filter F1
for testing the wavelength accuracy
Holmium wavelength calibration standard
UV/Vis spectroscopy: suitable
12 - Non Combustible Liquids
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