EPA Method 551.1 Performance Check Sol’n

2,2-Bis(chloromethyl)-1,3-propandiol bis[bis(2-chloroethyl) phosphate],50 µg/mL,toluene,1mL,

1,2,3,4,6-Pentachloro[13C12]dibenzofuran, 1.2ml x 1ug/ml, nonane

Diethyl sulfate