Method 1640 Tuning Standard Back Catalog number: 53147 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 83604 Quinclorac Price on request 0458.17-K-IO 2,6,9-Trimethylphenanthrene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 66271-32-7 Price on request 83568 Dichlorprop Price on request