Internal Standard Spiking Solution, 1.2ml, nonane

D4-4-n-Nonylphenol, 100 µg/ml, Acetone, 1ml

Benzalkonium chloride, 100µg/ml in AL, 5ml

Hexabromobenzene, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 87-82-1