A 1.5 mL concentrate in Acetone for use with Methods 506/525/550. Each sample includes Benzo(a)pyrene - 0.2 - 2.5ug/L, bis(2-Ethylhexyl)phthalate - 5 - 50 ug/L, bis(2-Ethylhexyl)adipate - 8 - 50 ug/L, plus a subset of analytes drawn from the following list: