NBN T 04-306-1983
Urea for industrial use - Measurement of colour in Hazen tmits(platinum-cobalt scale) of a urea-fonnaldehyde solution

Standard No.

NBN T 04-306-1983

Release Date

1982

Published By

BE-NBN

Latest

NBN T 04-306-1983

NBN T 04-306-1983 history

• 1982 NBN T 04-306-1983 Urea for industrial use - Measurement of colour in Hazen tmits(platinum-cobalt scale) of a urea-fonnaldehyde solution