Internal Standards Mix 33, 2000 ng/µl, 1ml

Sulfamethizole, 100 µg/ml, Methanol, 1ml

Di-n-heptyldisulfide, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 10496-16-9

o-Cresol-d8 & p-Cresol-d8