Method 1640 Tuning Standard Back Catalog number: 53147 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1569.18-K-ME Norcodeine, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 467-15-2 Price on request DD-12378-S 1,2,3,7,8-Pentachlorodibenzo-p-dioxin, 1.2ml x 50ug/ml, nonane Price on request 72034 Tetraphenyltin Price on request