(a) Cotton must be sampled by a gin or warehouse that holds a valid license to sample cotton issued pursuant to §§ 28.20 through 28.22.

(b) The Director, or an authorized representative may direct that sampling be performed by employees of the Department of Agriculture for the purpose of appraising the sampling procedures at cotton gins or warehouses, or for the purpose of providing service to producers in special cases where a licensed gin or warehouse is not available.