115924 Nigrosine (C.I. 50420) Certistain® dry dye used to stain capsules and spores
The CERTISTAIN® dry dye Nigrosin (C.I. 50420) (watersoluble) is used for the preparation of a staining solution for the visualization of capsule (negative capsule staining) in bacteriological material of human origin.As CERTISTAIN® dye it is chemically quality-certified according to highest standards and strict specifications. As an IVD product and CE registered, it can be used hassle-free in diagnostics and laboratory accreditations.Certistain® dry dye used to stain capsules and sporesSimpan pada +5°C hingga +30°C.
| Identity - sodium | passes test |
| - UV/VIS-Spectrum | passes test |
| Absorption maximum λ max (ethanol 50 %) | 570 - 580 nm |
| Spec. Absorptivity A 1%/1cm (λmax; 0.025 g/l; ethanol 50 %) | 200 - 300 |
| TLC-Test | passes test |
| Loss on drying (110 °C) | ≤ 15 % |
| Suitability for microscopy | passes test |