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sklademVydáno: 2002-03-27
BS ISO 7760:2001
Photography. Processing waste. Determination of hydroquinone
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Označení normy: | BS ISO 7760:2001 |
Počet stran: | 18 |
Vydáno: | 2002-03-27 |
ISBN: | 0 580 39226 0 |
Status: | Standard |
Popis
BS ISO 7760:2001
This standard BS ISO 7760:2001 Photography. Processing waste. Determination of hydroquinone is classified in these ICS categories:
- 13.030.30 Special wastes
- 37.040.30 Photographic chemicals
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.