pH-bereik | 5.8 tot 7.2 |
Bufferreagens | Bis-(2-hydroxyethyl)imino-tris-(hydroxymethyl)-methane |
Assay (titr.) | ≥99 % |
Loss of drying (90 °C, 30 min) | ≤1.0 % |
pH value (1 M, H2O) | 9.0-11.0 |
Solubility (1 M in H2O) | clear, soluble |
Iron (Fe) | ≤0,0003 % |
Heavy metals (as Pb) | ≤0,0003 % |
Absorbance | |
340 nm | ≤0,02 |
280 nm | ≤0,04 |