WS Trace Elements #1

2,2',3,4,4',5,5'-Heptachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 35065-29-3

Initial Check Verif. Standard 4, in 4%HNO3, 100ml

MCPA-d3,100 µg/mL,acetone,1mL,