Paragraph 3 Reagents
Northern Ireland Not yet in force
3.1
Toluene.
3.2
Sodium sulphate, anhydrous.
3.3
Buffer solution pH1: dissolve 27.2 g sodium acetate trihydrate in 300 ml 1M hydrochloric acid and add 700 ml water.
3.4
Buffer solution pH 0.65: dissolve 27.2 g sodium acetate trihydrate in 400 ml 1M hydrochloric acid and add 600 ml water.
3.5
Isobutylidenediurea.
3.6
Internal standard solution: dilute 5 ml isopropyl acetate to 100 ml with toluene (3.1).