Valeraldehyde-DNPH Back Catalog number: 83561 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended PBB-153-CS 2,2',4,4',5,5'-Hexabromobiphenyl (PBB-153), 100µg/mL in IO, 1,2ml Price on request 2255.31-50-IO 17 alpha(H),21ß(H)-(22RS)-Homohopane, 50µg/mL in Isooctane, 1ml Price on request 8231.14-50-IO 2-Chloroanthracene, 50µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 17135-78-3 Price on request