Method 1640 Tuning Standard Back Catalog number: 52147 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 93443 Citric acid [0.2% wt] Price on request 10554.14-1G Dibenzylsulfide Price on request 2483.10-100 Dinoterb, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 1420-07-1 Price on request