Picric acid, 100 µg/ml, Acetonitrile, 10ml

n-Heptane, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 142-82-5

ISO 8165-2 Internal Control Stock Solution 1 S-4355 1 Internal standard, 10 µg/mL, in methanol, 5mL 2,4-Dibromophenol [615-58-7] 2061,6

IC Standard 1B