Primary Calibration PID (VPH) Back Catalog number: 91784 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1935.5-1ML N-Methylbis(trifluoroacetamide), neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 685-27-8 Price on request 79528 Furan Price on request 11691.12-100-IO 2,3,4',4'-Tetachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request