EPA Method 525 Surrogate Standard Back Catalog number: 93971 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70697 Fonofos Price on request ALR-135S-CN Monobutyl phthalate (mBP), 100µg/mL in AcCN,1ml Price on request 91516 Aroclor 1248 Price on request