This GSO specifies general conditions relating to sampling for the assessment of the quality of cereals, pulses and milled products from cereals and pulses (hereinafter called "grain"), in bulk or in bags, but excluding pellets. It is applicable to the manual or mechanical sampling of static bulk grain up to a depth of 3 m. For static bulks exceeding 3 m in depth up to a maximum depth of 12 m, it is necessary to use mechanical sampling methods. For bulk grain exceeding 12 m in depth it is necessary to sample grain when flowing. This latter sampling method is also applicable for all depths of bulk grain (see GSO….. "Flowing cereals and milled cereal products – Automatic sampling by mechanical means" ). This GSO is not applicable to seed grain, nor does it apply to sampling for testing for hidden infestation. It is not applicable to flowing grain. This GSO is not applicable for certain sampling requirements (e.g. microbiological, mycotoxin and pesticide residue analysis). In these cases, it is recommended that the parties concerned come to an agreement. NOTE 1 Sampling of seed grain is covered by rules established by the International Seed Testing Association. NOTE 2 Sampling for hidden insect infestation is covered by GSO / ISO 6639 - 2 . NOTE 3 GSO….. "Flowing cereals and milled cereal products – Automatic sampling by mechanical means" ).covers sampling of flowing grain.