IP 298: Determination of quinizarin - Extraction spectrophotometric method
- Method adopted/last revised: 1992
- Method reapproved: 2006
- REF/ISBN: IP298-2934869
- Status: Current
- First printed in STM books: January 1992
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Scope
This method specifies the identification and determination of quinizarin in marked gas oil in the range 0, 04 - 3,00 mg/l. The normal level of addition as prescribed by HM Customs and Excise is 1,75 mg/l.
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