the number of minutes required for the colour of the sample to match that of the colour standard after adding 1 ml of a 1 mmol/l potassium permanganate solution to 10 ml of the sample
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DE: Permanganat-Entfärbungszeit [T45102]
FR: temps de décoloration d'une solution de permanganate [T45102]
FI: permanganaattiliuoksen kirkastumisaika [T45102]
3. PRINCIPLE
The time for the colour of the sample, after addition of potassium permanganate, to match that of a colour standard is determined and defined as the permanganate clearing time.
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