[Code of Federal Regulations]
[Title 40, Volume 23]
[Revised as of July 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR174.526]

[Page 626]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 180_TOLERANCES AND EXEMPTIONS FROM TOLERANCES FOR PESTICIDE CHEMICALS IN 
 
                  Subpart D_Exemptions From Tolerances
 
Sec. 174.526  Hygromycin B phosphotransferase (APH4) marker protein in 

all plants; exemption from the requirement of a tolerance.

    Residues of the Hygromycin B phosphotransferase (APH4) enzyme in all 
plants are exempt from the requirement of a tolerance when used as a 
plant-incorporated protectant inert ingredient in cotton.