Color Back Catalog number: 54255 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 54213 Ammonia as N Price on request 1993.10-50-IO 1-Chloronaphthalene, 50µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 90-13-1 Price on request NG-S674-1G Lauric acid diethanolamide, 1g Price on request