(1) Use a sampler that removes a core diagonally from end-to-end of the container.

(2) The lot and the sample size consisting of not less than one pound will be established in the following manner:

(3) Small packages of dry fertilizer material in packages of 80 pounds or less, when not practical to sample according to subsection (2), shall be represented by one unbroken package which will constitute the official sample.

(4) Place all cores into sample container and send to the laboratory.

(1) Use a bulk cup-type sampler with an opening width at least three times the diameter of the largest particle being sampled and long enough to “cut” the complete stream. The stream must be “cut” with the sampler at least ten times at equal intervals.

The person or distributor in possession of the material must supply a safe and convenient access to a stream of the material being loaded or unloaded for the sampler.

(2) Use a “Missouri D” probe or sampling scoop according to the following system:

(1) Scrape outer surface aside to expose representative material before inserting sampler.

(2) Take at least 20 approximately equal cores from fairly evenly distributed parts of the quantity.

(3) Place all cores into sample container and send to the laboratory for mixing and quartering.

(1) Full horizontal cylindrical or spherical tanks or containers are sampled with a restricted fill liquid sampling device. Lower the liquid sampler just below the surface and allow to fill, the liquid sampler is then recovered and emptied into a suitable container. This process is repeated twice at the center level of the tank or container and once at the bottom. All four aliquots are thoroughly mixed and tested; or a sample of the four aliquots consisting of not less than one pint shall be sent to the laboratory for testing.

(2) Sample vertical cylindrical, cubic or rectangular shaped tanks or containers by proceeding as in “(1)” except one aliquot is taken from the center level rather than taking two aliquots from the center level.

(3) Nonpressurized nitrogen solutions, nitrogen-phosphate mixtures, and other clear solutions may be sampled at the sight gauge or outlet after these openings have been drained and flushed with the solution. Fertilizer suspensions or slurries must be completely agitated before sampling; when a homogenous mixture is achieved, sample as above.

(4) Streamcutting a homogenous mixture from a valve while loading is an acceptable sampling procedure.

(5) Small packages of liquid fertilizing materials, when not practical to sample according to subsection (d)(1)(2)(3), shall be represented by one unbroken package which will constitute the official sample.