The Fertilisers (Sampling and Analysis) Regulations (Northern Ireland) 1991 No. 540

SCHEDULE 2 METHODS OF ANALYSIS

PART II

5b. EXTRACTION OF PHOSPHORUS BY 2% CITRIC ACID

5.    PREPARATION OF THE SAMPLE

The analysis is carried out on the product as received after carefully mixing the original sample to ensure it is homogeneous.

See Method 1.