The periodic and timely sampling of stored grains can detect existing or potential problems before considerable damage has occurred. Proper sampling of stored grain can reveal increases in moisture or temperature and insect or mold problems in the grain.
It is important to be aware of the potential hazards of sampling inside a grain bin. Suffocation can occur in grain bins, and sampling should be done with caution.
"SP341-V-Sampling Stored Grain for Insects, Molds and Related Problems," The University of Tennessee Agricultural Extension Service, 04-0166 SP341V 12/03(Rev) E12-4615, https://trace.tennessee.edu/utk_agexcrop/21