Total Kjeldahl Nitrogen as N

Benzo(a)anthracene-d12

2 alpha+2ß,17 alpha(H),21ß(H)-2-Methylhopane (ca 1:3), neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 126208-29-7/138057-81-5

EPA Method 418.1 - Total Petroleum Hydrocarbons