A primary calibration device, the DigiCal Calibrator provides instantaneous calibration for instruments like the MSA Escort LC Sampling Pump or the secondary flow standard inside the Escort ELF Sampling Pumps. Just press the plunger and the DigiCal Calibrator does the work. Its unique flow cell replaces conventional bubble tubes and makes calibration easier. Achieves extreme accuracy by utilizing a computerized flow meter that provides instantaneous flow readouts on a digital display. Accurate measurements are possible within + or - 0.5 percent at any altitude.