OpenLegislation

Paragraph 4 REAGENT

Original text. Later amendments are not shown.

4.1

2% citric acid solution (20 g per litre), prepared from citric acid monohydrate.

Note:

Verify the concentration of this citric acid solution by titrating 10 ml with a 0.1 M sodium hydroxide standard solution using phenolphthalein as an indicator. If the concentration is correct, the titre should be 28.55 ml.