Calibration Standard Set Back Catalog number: 53042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678385 Diafenthiuron, 100 µg/ml, Acetonitrile, 1ml Price on request 23012 EPA Method 8260B Surrogate Standard Price on request C16995100 Sulfamerazine, 250mg Price on request