EPA Method 552.1 - Surrogate Standard

Citalopram hydrobromide, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 59729-32-7

Azulene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 275-51-4

Dichloroabietic acid, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 65281-77-8