Isocratic and gradient Test Sample, 4 x 0.5mL

Isocratic standard contains 0.15% dimethylphthalate, 0.15% diethylphthalate, 0.01% biphenyl, 0.03% 0-terphenyl in methanol. Gradient standard contains 0.15% dimethylphthalate, 0.15% diethylphthalate, 0.01% biphenyl, 0.03% 0-terphenyl and 0.3% bis(2-ethylhexyl) phthalate in methanol.