Internal Reference Standard Back Catalog number: 52187 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1783.10-10MG 2,3-Diaminonaphthalene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 771-97-1 Price on request 52148 TCLP 1312Metals Price on request 675385 Saccharin, 250mg Price on request