CFR › Title 40 › Part 415 › §415.54140 CFR §415.541Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkFor the purposes of this subpart:(a)Except as provided below, the general definitions, abbreviations and methods of analysis set forth in part 401 of this chapter shall apply to this subpart.(b)The term product means sodium bisulfite.