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immediate downloadReleased: 2001
ISO 7760:2001
ISO 7760:2001-Photography — Processing waste — Determination of hydroquinone
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| Standard´s number: | ISO 7760:2001 |
| Pages: | 8 |
| Edition: | 2 |
| Released: | 2001 |
| Language: | English |
DESCRIPTION
ISO 7760:2001
This International Standard specifies a spectrophotometric method for the determination of hydroquinone in photographic processing waste. This method can be applied to samples containing hydroquinone in the concentration range of 200 μg/l to 4 000 μg/l; aminophenols and phenylenediamines should also be determined by this method. However, sulfonated hydroquinones or products from the further oxidation of benzoquinone will not be determined.