EPA Method 8310 Surrogate Standard Back Catalog number: 94123 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 19494 EPA Method 524 & 624 - Internal Standard Price on request ZA22006200CY Toxaphene Parlar-No. 62, 1µg/mL in Cyclohexane, 1ml Price on request 54174 Ferrous Iron (Fe) Price on request