EPA Method 8260 Internal Standard - Revised Back Catalog number: 21013 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674545 Pyraflufen-ethyl, 100mg Price on request 682215 Metribuzin-desamino-diketo, 5mg Price on request 92264 Ethers & Thioethers Price on request