EPA Method 507 Surrogate Standard

(-)-delta-9-THC-acid-13C4

Carbazole-d8, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 97960-57-1

n-Heptyl 4-hydroxybenzoate, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 1085-12-7