CERTIFICATE OF ANALYSIS
Product Name NIGROSINE ALCOHOL SOLUBLE For Microscopy CAS Number 11099-03-9
Molecular Formula ---------- Catalogue No. AL3242
Molecular Weight ---------- Batch Number
Manufacturing Date December-2020 Expire Date November-2025

TYPE OF TEST

STANDARD

OBSERVED
Description
Absorption maxima (in 50% ethanol)
Specific absorptivity (A1%, 1cm 0.025g/L ethanol 50%)
Black powder
570 – 580 nm
200 - 300
Black powder
577 nm
275
Result: The above product complies with LR grade

Tested By
Hitesh Kunjathur

Analysed By
Preeti Rane