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In calculating the proportion of acid to a [F1cubic metre] of air, smoke, or gases, for the purposes of this Act, such air, smoke, or gases shall be calculated at the temperature of [F115 degrees Celsius], and at a barometric pressure of [F1one bar].
Textual Amendments
F1Words substituted by S.I. 1983/943, reg. 6, Sch. 3