Leybold UL 100 & 100 Plus

The Leybold Ultratest UL 100 is a compact helium leak detector that is fully automatic and can detect leaks as small as 2 x 10-10 mbar l/s. This unit is a great solution for a customer looking for a helium leak detector at a much lower cost.


The Leybold Ultratest UL 100 and 100 Plus was the first generation of helium leak detector to be fully automatic. It is still a very effective unit for finding leaks and sniffing. Our technicians can customize the unit with any external roughing pump and mount it on a mobile cart in a number of configurations. We have the largest inventory of spare parts for the model in the USA and many components are still in use in current generation leak detectors.


  • Full automatic operation: Press start to test and stop to vent.
  • Durable helium mass spectrometer and ion source
  • High stability, accuracy and repeatably
  • Very customization setup
  • Low cost of ownership


  • Product Testing
  • Leak Sniffing
  • Maintenance
  • Leak Testing


  • External test leak
  • Sniffer Probe
  • Mobile cart


Leybold UL 100 Plus Manual

Leybold UL 100 Brochure

Technical Data:

Leybold UL 100 Technical Data