CFR › Title 7 › Part 201 › §201.367 CFR §201.36Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkThe words “free” and “none” shall be construed to mean that none were found in a test complying with the methods set forth in §§ 201.45-201.52.