N.Y. General Business Law Section 320
Standard of purity

The gas furnished or supplied by any corporation, association, partnership or person in any city of the second class shall be free from sulphuretted hydrogen, to be determined by exposing for thirty seconds a slip of white paper saturated with acetate of lead to a jet of gas flowing about five feet per hour, and each one hundred cubic feet shall not contain more than ten grains of ammonia nor twenty grains of sulphur.

Source: Section 320 — Standard of purity, https://www.­nysenate.­gov/legislation/laws/GBS/320 (updated Sep. 22, 2014; accessed Nov. 1, 2025).

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Nov. 1, 2025

Last modified:
Sep. 22, 2014

§ 320. Standard of purity's source at nysenate​.gov

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