(Use Part# 82423) EPA Method 8240A Mix #3 Back Catalog number: 82403 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 73146 Ethyl-ß-D-glucuronide Price on request 12040.22-10MG Vitamin A acetate,neat,neat,10mg, Price on request 8471.11-100-CY Carbadox Price on request