Total Kjeldahl Nitrogen as N

2,2',3,3',4,4',5-Heptachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Mesosulfuron-methyl, 10.0 µg/ml, Acetonitrile, 1

2,2',3,4',5',6-Hexachlorobiphenyl (149)