pH 4.0 Standard @ 25°C

2,3,4,6,9-Pentachlorodibenzofuran (or 1,4,6,7,8), 1.2ml x 50ug/ml, nonane

2,6-Dichlorobenzyl chloride,1000 µg/mL,isooctane,1mL,

1,1,2-Trichloroethane, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 79-00-5