Surrogate Standard Back Catalog number: 92469 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 91297 EPA Method 525.2 - 526 Internal Standard Price on request 673786 Diflufenican, 10 µg/ml, Ethyl acetate, 10ml Price on request 95130 Oxygenates Mix Price on request