2,3,7,8-TetraCDD 100 ng/mL1,2,3,7,8,9-HexaCDD. 250 ng/mL2,3,7,8-TetraCDF . 100 ng/mL1,2,3,7,8,9-HexaCDF . 250 ng/mL1,2,3,7,8-PentaCDD 250 ng/mL2,3,4,6,7,8-HexaCDF . 250 ng/mL1,2,3,7,8-PentaCDF . 250 ng/mL 1,2,3,4,6,7,8-HeptaCDD 250 ng/mL2,3,4,7,8-Penta