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ISO
ISO 6849:1996

ISO 6849:1996

Photography — Processing wastes — Determination of boron

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General Information

Status :

Active

Standard Type : Main

Document No : ISO 6849:1996

Document Year : 1996

Pages : 9

Edition : 1

Section Volume : Photography (ISO/TC 42.)

ICS : Special wastes (13.030.30)Photographic chemicals (37.040.30)

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.