Bis(2-ethylhexyl)phthalate (100 µg/mL in Methanol. U-PS-100 ( 1 x 1 mL ) Butyl benzyl phthalate (100 µg/mL in Methanol) . U-PS-110 ( 1 x 1 mL )Di-n-butyl phthalate (100 µg/mL in Methanol).U-PS-120 ( 1 x 1 mL ) Diethyl phthalate (100 &mic