EPA Method 552.2 - Surrogate Standard Back Catalog number: 30109 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11673.12-100-IO 2,3,4-Trichlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request 73683 Cannabidiolic acid [CBDA] Price on request 681149 Sulisobenzone, 100mg Price on request