Reference number
ISO 6849:1996
ISO 6849:1996
© ISO 2024
International Standard
ISO 6849:1996
Photography — Processing wastes — Determination of boron
Edition 1
1996-11
1996-11
ISO 6849:1996
13358
Published
(Edition 1, 1996)
This publication was last reviewed and confirmed in 2021.
Therefore this version remains current.
Abstract
Gives two methods for the determination of boron in photographic processing wastes. The first method is the estimation of borates by titration of the boric acid-mannitol complex. Suitable for boron concentrations of 0,1 mg/l and higher. The second alternative method is a spectrophotometric technique using methylene blue which can be used in the concentration range of 0,1 mg/l to 1,0 mg/l.