§ 180.1011 Viable spores of the microorganism Bacillus thuringiensis Berliner; exemption from the requirement of a tolerance.

(a) For the purposes of this section the microbial insecticide for which exemption from the requirement of a tolerance is being established shall have the following specifications:

(1) The microorganism shall be an authentic strain of Bacillus thuringiensis Berliner conforming to the morphological and biochemical characteristics of Bacillus thuringiensis as described in Bergey's Manual of Determinative Bacteriology, Eighth Edition.

(2) Spore preparations of Bacillus thuringiensis Berliner shall be produced by pure culture fermentation procedures with adequate control measures during production to detect any changes from the characteristics of the parent strain or contamination by other microorganisms.