Certificate of Analysis

Product Name NIGROSINE stain 10% w/v For Microscopical Staining
CAS Number 8005-03-6
Molecular Formula C₁₄H₁₀N₃NaO₃S
Catalogue No. AL01087
Molecular Weight 319.30 g/mol
Batch Number AL-2026-AL01087
Manufacturing Date September-2026
Expire Date September-2031
Type of Test Standard Observed
Assay 10% w/v 10.2% w/v
pH 7 7.0
Moisture Content <1% 0.5%
Residue on Ignition <0.5% 0.3%
Related Substances None detected None detected
Result: The above product is expected to comply with 10% w/v solution grade specification.

Tested By

Hitesh Kunjathur Tested By Stamp

Analysed By

Preeti Rane Analysed By Stamp
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