BS 2690-12 1972 Edition, April 7, 1972
Methods of testing water used in industry. Nickel, zinc, chromates and total chromium and manganese
Includes all amendments and changes through Change/Amendment , April 7, 1972
Additional Comments: W/D S/S BY BS 6068-2.29, BS 6068-2.31
Published By:British Standards Institution (BSI)
Spectrophotometric methods for trace impurities.