Any person engaged in the business of furnishing or supplying illuminating gas in the city to any consumer shall be and hereby is required to furnish and supply such gas so far free from sulphurated hydrogen that it shall not discolor a test paper imbued with acetate of lead when such test paper is exposed to a column of gas issuing at a rate of not less than five cubic feet per hour for 60 seconds under a pressure of one and five- tenths inches of water, and so that 100 cubic feet of such gas shall not contain more than 30 grains of sulphur, and so that 100 cubic feet of such gas shall not contain more than five grains of ammonia.
(Prior code § 187-1)