Specifications | |
---|---|
Dye content (spectrophotometrically) | ≥ 80 % |
Identity (UV/VIS-Spectrum) | passes test |
Absorption maximum λmax. (ethanol 50 %) | 628 - 632 nm |
Spec. Absorptivity A 1%/1cm (λmax; 0.003 g/l; ethanol 50 %) | 1860 - 2370 |
TLC-Test | passes test |
Loss on drying (110 °C) | ≤ 5 % |
Suitability for microbiology | passes test |