"In drawing samples the following measures and precautions should be observed.
a) Samples shall not be taken at a place exposed to rain / sun.
b) The sampling instruments should be clean and dry.
c) The fertiliser being sampled, the sampling instruments and the bags of samples should be free from any contamination.
d) To draw a representative sample the contents of each bag selected for sampling should be thoroughly mixed.
e) The sample should be kept in suitable clean dry and air tight glass or screwed hard polythene bottle of about 400 gm capacity or in a thick gauged polythene bag. This should be put in a cloth bag which may be sealed with the Inspector’s seal after keeping inside the detailed description as specified in Form "