IP 298: Determination of quinizarin - Extraction spectrophotometric method

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  • Method adopted/last revised: 1992
  • Method reapproved: 2006
  • REF/ISBN: IP298-2934869
  • Status: Current
  • First printed in STM books: January 1992

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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