L-Ascorbic acid sodium, 100µg/ml in Acetonitrile,

1,2,3,6,7-Pentachloro(13C10)naphthalene, 1.2mL x 50ug/mL, nonane

Polyoxyl 35 Castor Oil, 10g

x of 4-Nonyl- and 4-t-Octylphenols ethoxylates, 20/4µg/ml in Acetone, 1ml