PCB No. 18, certified, 25mg

Chlorothalonil-4-hydroxy, 100µg/ml in AL, 1ml

2,4-Dihydroxybenzophenone-13C6, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 131-56-6 (unlabelled)

PSA-Mix 13