EPA Method 8260B Surrogate Standard Back Catalog number: 23004 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79234 5-Nitro-o-toluidine Price on request 93843 Endrin aldehyde Price on request A629000 2-Amino-9H-pyrido[2,3-b]indole, 5mg Price on request