BS 6068-2.20 86th Edition, February 28, 1986
Water quality - Part 2: Physical, chemical and biochemical methods - Section 2.20 Method for determination of cyanide by diffusion at pH6
Includes all amendments and changes through Reaffirmation Notice , November 15, 1995
Additional Comments: SAME AS ISO 6703-4 * W/D NO S/S
Published By:British Standards Institution (BSI)
Free cyanide in photographic effluents and waste waters, in the range 10 μg/l to 150 μg/l.