Method 1640Mix A

Di-n-octyl phthalate-3,4,5,6-d4, 100µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 93952-13-7

Caffeine, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 58-08-2

EPA Method 8240A Mix #2