EPA Method 552.1 - Surrogate Standard Back Catalog number: 31057 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678443 Naled, 100 µg/ml, Acetonitrile, 5ml Price on request 675443 Bixin, 10mg Price on request 11442.27-100-IO Tris(4-isopropylphenyl) phosphate-d33,100 µg/mL,isooctane,1mL, Price on request