The Pioneer of Modern Leak Testing

Leak Master

(Chinese Translation)

Leak Master Leak Tester Calibration Device

For more than 50 years, Uson has been the global leader in the field of leak standards for a wide range of leak and flow testing applications.   Our Leak Master leak tester calibration device gives you the ability to verify the performance of your leak tester or flow meter and are an essential accessory for your leak testing equipment and metrology department.

Leak Master Certified Calibration Performance


Uson Leak Master Leak Tester Calibration Device

  • Traceable to NIST certified devices
  • Leak/Flow ranges: 0.2 cc to 20 scfm
  • Pressure: up to 1000 psi
  • Precision-made laser-drilled orifice, sealed in place between SAE O-rings



Leak Master Calibration Device Designed For Performance

Made of the highest quality materials and components, the Leak Master provides the following features:

  • Leak rates can be changed if necessary by replacing the laser drilled orifice plate
  • Choose from brass or stainless steel quick-connect fittings, in standard or small size
  • We offer alternate connectors to meet customer specific requests
  • Manufactured to customer specified leak/flow rate and pressure

Uson Leak Tester Accessories & Repair Services

In addition to Leak Master calibration device, we also offer a variety of helpful leak tester accessories including quick connectors, printers, cables and more.  Uson also offers full calibration and repair services for Uson leak testing equipment.

Trusted Resource For Leak Master & Leak Testing Solutions

As a pioneer of automated leak testing equipment for medical  the automotive, industrial and packaging industries, Uson is the experienced leader in these specialized fields.  Contact us to find out how we can help with your calibrated leak or flow instruments.

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Uson L.P. - Corporate

8640 N. Eldridge Parkway
Houston, TX 77041 USA

Tel: +1-281-671-2000
Fax: +1-281-671-2001


Uson UK – Europe

Western Way
Bury St. Edmunds
Suffolk, IP33 3SP United Kingdom

Tel: +44-1284-760606
Fax: +44-1284-763049


Uson – China

Room 601, 567 Lan Gao Road
Shanghai, 200333, China

Main: 021-583 65859, 021-583 59187
Fax: 021-583 59185, 021-337 73559