IC Standard 1B Back Catalog number: 50700 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended BCR-340 Benzo[b]naphtho[1,2-d]furan, 10mg Price on request 10412.4-10MG Sodium DL-3-hydroxybutyrate-3,4,4,4-d4 Price on request 50096 Metals Calibration Standard Price on request