A petroleum hydrocarbon laboratory may be accredited in the following category groups: Total Petroleum Hydrocarbons (TPH), Benzene, Toluene, Ethylbenzene, and Xylene (BTEX), Flash Point, and MTBE
Okla. Admin. Code § 252:301-1-8
A petroleum hydrocarbon laboratory may be accredited in the following category groups: Total Petroleum Hydrocarbons (TPH), Benzene, Toluene, Ethylbenzene, and Xylene (BTEX), Flash Point, and MTBE
Okla. Admin. Code § 252:301-1-8