Withdrawn
Alkaline fusion of a test portion by sodium carbonate and subsequent neutralization by sulphuric acid. Measurement of the absorption of the complex formed by chromium and diphenylcarbazide at a wavelength of abour 540 nm after adding sodium azide for elimination of the colour caused by manganese.
WITHDRAWN
SRPS H.B8.358:1982
95.99
Withdrawal of Standard
Jan 28, 2013