Internal Standard Back Catalog number: 93185 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 12035.19-5MG 4-ANPP,neat,neat,5mg, Price on request 1768.16-10MG 1,3-Diaminopyrene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 92821-64-2 Price on request 678281 D5-Terbutryn, 100 µg/ml, Acetone, 1ml Price on request