SCHEDULE 2METHODS OF ANALYSIS
PART II
5.DETERMINATION OF POTASSIUM — GRAVIMETRIC METHOD
SCOPE AND FIELD OF APPLICATION1
This method is applicable to fertilisers in Groups 3(b), 3(c), 3(d) and 4(c) of Section A and Group 5 and 6 of Section B of the Table in Schedule 1 of the Fertilisers Regulations 1991 in respect of which an indication of total potassium is required.