EPA Method 507 Surrogate Standard Back Catalog number: 19049 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 680646 Pyrifluquinazon, 100 µg/ml, Acetonitrile, 1ml Price on request 58081 Thallium (Tl) Price on request 79662 Folicur (Tebuconazole) Price on request