Method 1640 Tuning Standard Back Catalog number: 52147 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 73144 Ethylsulfate sodium salt Price on request 9538.9-100-ME Etirazetam-d6, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. Price on request 3756.20-K-IO Alverine (free base), 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 150-59-4 Price on request