COD Calibration Standard Back Catalog number: 50451 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended D454552 4,6-Dihydroxypyrazolo[3,4-d]pyrimidine-13C,15N2, 1mg Price on request PFRS-024S Tris(2-chloroethyl) phosphate, 100µg/ml in TO, 1ml Price on request 679152 13C3-2-NP-AHD, 10mg Price on request