ANSI PH4.41-1990
Photography - Processing Waste - Analysis for Free Cyanide at pH6

Standard No.

ANSI PH4.41-1990

Release Date

1990

Published By

American National Standards Institute （ANSI)

Latest

ANSI PH4.41-1990

Scope

Gives a method to be used to determine free cyanide in undiluted photographic effluents and wastewater having concentrations of free cyanide from 5 to 160 micrograms per liter.

ANSI PH4.41-1990 history

• 1990 ANSI PH4.41-1990 Photography - Processing Waste - Analysis for Free Cyanide at pH6