pH 7.01 buffer solution (box of 25x20mL sachet)

4-n-Nonylphenol-2,3,5,6-d4, 100µg/ml in MeOH, 5ml

Internal standard 3, 2000g/ml in MeOH, 1ml

1,4,6,7-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane