Instrument Standard 4 Back Catalog number: 53080 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1583.30-10MG Betulin, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 473-98-3 Price on request 0001.18-200-T Triphenylene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 217-59-4 Price on request PN-36S 1,2,5,6-Tetrachloronaphthalene, 1.2mL x 50ug/mL, nonane Price on request