GCs that meet the standards in §§ 3175.117 and 3175.118 for determining heating value and relative density are approved for use.
43 C.F.R. §3175.45
GCs that meet the standards in §§ 3175.117 and 3175.118 for determining heating value and relative density are approved for use.
43 C.F.R. §3175.45