ISO 6849:1996

Current Revision
Photography - Processing wastes - Determination of boron

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ISO 6849:1996

Photography - Processing wastes - Determination of boron

PUBLISH DATE 1996
ISO 6849:1996

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.

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