Medical Device Qualified Supplier Directory


Uson - L.P. Company Profile


  • Optima vT
  • Qualitek mR
  • Raptor
  • Uson 628
  • Sprint iQ
  • Sprint mD
E: [email protected]
T: (281) 671-2000
F: (281) 671-2001

8640 North Eldridge Parkway, Houston, TX, 77041, United States
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Qualifications: ISO 9001, CGMP Certified, Supplier to Medical Manufacturers, Exhibitor in at least 2 MD&M and/or MEDTEC shows

Markets Supplied: North America, Europe, Worldwide


Leak Testers and Leak Detection Solutions for Medical Device Manufacturers A GLOBAL LEADER FOR OVER 50 YEARS Uson is the pioneer that used technology first developed for NASA and applied it to a variety of leak detection and testing applications in the medical device and pharmaceutical packaging industries.

Uson leak testers are the instruments of choice for medical device manufacturers around the world. With an installed base of thousands, we help you deliver safe, reliable products and protect you from costly recalls. 

COUNT ON OUR EXPERTISE AND QUALITY You want more than just premium quality products. Uson gives you:

  • Technically knowledgeable people with 25+ years of experience
  • Unrivaled leak testing expertise and knowledge gained over 50 years
  • Customer driven designs for ease of use and proven technology
  • Global network of leak testing experts
  • ISO 9001 and AQDEF Q-DAS Certifications, good understanding of GMP and validation
WIDE RANGE OF MEDICAL APPLICATIONS From aspirators to valves and all other medical devices in between, we help manufacturers perform leak testing using the widest selection of leak detection equipment available from any single source.

Our in-house manufacturing and calibration capabilities give us unsurpassed experience in designing customized test solutions for automated or semi-automated leak detection systems. Look to Uson for lifetime support for your leak testing solution.

  • Pressure decay leak testers
  • Differential pressure leak testers
  • Mass flow testers
  • Burst, occlusion and sealed component techniques
  • Combination instruments – pressure decay mass flow + burst or other combinations
  • Multi-channel concurrent or sequential test instruments
  • Leak testers for flexible packaging
  • Data collection – USB and network
  • Trace gas detectors
  • Manual, semi automatic and fully automatic systems and fixtures
  • Calibration, Leak Detector Selection and Repairs

628 Differential Pressure Decay Leak Tester: The 628 differential pressure decay leak tester is a cost-effective solution for leak testing a wide range of components using the differential pressure decay method.

Uson’s Model 628 differential pressure decay leak tester is a compact, reliable, and accurate instrument that is ideal as a budget-friendly benchtop option for the medical device industry. Pre-loaded with differential pressure decay, differential vacuum decay, and compensation and calibration programs, the 628 is a powerful leak tester with the capability to collect and transmit a vast amount of data for offline trend analysis and a deep level of insight.

Up to 30 different programs can be created and stored in the instrument’s memory for fast recall of test parameters. Users can choose from five different pressure ranges from vacuum up to 225 psi (15 bar) to cover a wide range of applications from medical check valves to automotive radiators and more. Featuring a 4.3” TFT graphic display, 15-degree viewing angle, and large accept/reject lamps, the 628 is ideal for any application requiring positive, non-subjective, results observation. 

A backlit user interface makes accessing information easy, while bright, uniquely designed lights on the front panel allow for at-a-glance monitoring from across a room. With a front-mounted challenge port, easy-to-clean user interface, and rear-mounted regulator, the 628 is designed for the requirements of a busy laboratory environment.  Additionally, the menu system is intuitively structured to make setup and operation practically effortless.

Where the 628 stands apart is with its new electronic pressure regulator option, which is required for applications that need to test at multiple test pressures. The 628 can be programmed to test a part at different test pressures or in a linked sequence of test programs, serving to further the automation of the test sequence. The electronic regulator ranges are available for test pressures from vacuum up to 225 psi. Another benefit with the electronic regulator is that it adds an increased level of security. It is only accessible through the programming interface and can be locked and safeguarded to prevent unintended changes. This is a significant advantage over a manual regulator, which can be adjusted from the back of the instrument. 

Additionally enhancements to the 628 include a fast fill option that improves fill time for large volumes, comp/cal capability, additional quick connect options, and a Spanish language option. 

The 628 leak tester provides users on a tight budget with the precision and accuracy delivered by Uson’s industry-leading differential pressure decay transducers.  It is a surprisingly powerful instrument, packaged in a simple design. 

With its intelligently designed multi-language user interface option, the 628 supports leak testing requirements...

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Uson - L.P.
E: [email protected]
T: (281) 671-2000
F: (281) 671-2001

8640 North Eldridge Parkway, Houston, TX, 77041, United States
View map


Bury St Edmunds, SFK  United Kingdom
Western Way
Bury St Edmunds
IP33 3SP
United Kingdom
T +44 1284 760606
F +44-1284-763049
E [email protected]

Fraser, MI  United States
31471 Utica Rd
Fraser, MI
United States
T +1-248-589-3100
F +1-248-589-3103
E [email protected]

Pudong, Shanghai, 200120  China
Room 601 567 Lan Gao Road
T +86 21-583 65859
F +86 21-583 59185
E [email protected]

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