Ill. Admin. Code tit. 35 § 211.750
Current through Register Vol. 48, No. 45, November 8, 2024
"British Thermal Unit" means the quantity of heat required to raise one pound of water from 60 ° F to 61° F (abbreviated btu).
Ill. Admin. Code tit. 35, § 211.750
Added at 17 Ill. Reg. 16504, effective September 27, 1993