Vacuum Generation and Measurement Equipment Quality Test Smallest detectable leak rate of 5x10-12 mbar l/s and highest intake pressure of 25 mbar. Simple to operate. Four different variations to suit virtually any application. Communications interface can send test protocol to printer or the input of the data into a PC. Helium leak testing systems can detect the smallest leaks in products such as fuel tanks or air conditioning units. For more information, you can visit Pfeiffer 's page, or contact us directly where we'll gladly attend your requests. Back