Mass-Labelled PCDD/PCDF Solution/Mixture, 1.2ml, nonane

N-Nitroso-N-butyl-N-propylamine, 50mg

ISO 8165-2 Internal Control Stock Solution 2 S-4356 2,5-Dibromophenol [28165-52-8] 2470,6, 10 µg/mL in methanol, 5ml

Butralin, 250mg