40 CFR 417.161 - Specialized definitions.

§ 417.161 Specialized definitions.

For the purpose of this subpart:

(a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart.

(b) The term anhydrous product shall mean the theoretical product that would result if all water were removed from the actual product.

(c) The term surfactant shall mean those methylene blue active substances amenable to measurement by the method described in “Methods for Chemical Analysis of Water and Wastes,” 1971, Environmental Protection Agency, Analytical Quality Control Laboratory, page 131.

(d) The term normal liquid detergent operations shall mean all such operations except those defined as fast turnaround operation of automated fill lines.

(e) The term fast turnaround operation of automated fill lines shall mean an operation involving more than 8 changes of formulation in a 30 consecutive day period that are of such degree and type as to require thorough purging and washing of the fill line to maintain minimal product quality.

(f) The term BOD7 shall mean the biochemical oxygen demand as determined by incubation at 20 degrees C for a period of 7 days using an acclimated seed. Agitation employing a magnetic stirrer set at 200 to 500 rpm may be used.

[ 39 FR 13372, Apr. 12, 1974, as amended at 40 FR 27455, June 30, 1975]

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