CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS (Parts 400–471) > PART 439—PHARMACEUTICAL MANUFACTURING POINT SOURCE CATEGORY > 439.4—General limitation or standard for pH.

439.4—General limitation or standard for pH.

The pH must remain within the range 6.0 to 9.0 in any discharge subject to BPT, BCT or NSPS limitations or standards in this part.

Code of Federal Regulations

[68 FR 12271, Mar. 13, 2003]
The pH must remain within the range 6.0 to 9.0 in any discharge subject to BPT, BCT or NSPS limitations or standards in this part.

Code of Federal Regulations

[68 FR 12271, Mar. 13, 2003]