CLP Calibration Std. I Back Catalog number: 52149 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70242 Pentachloronitrobenzene Price on request NAP3MHPS Sodium perfluoro-3-methylheptanesulfonate, 1.2ml x 50ug/ml, methanol Price on request 70244 Pentafluorobenzene Price on request