IP 391-95 Calibration Level 4 Back Catalog number: 98404 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0015.16-5MG 1,8-Dinitropyrene, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 42397-65-9 Price on request 0007.10-100-T 1-Nitronaphthalene, 100µg/ml in Toluene, 1ml Price on request 1002.6-1ML Di-n-propylsulfide, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 111-47-7 Price on request