Halt – Hass Testing Services

"Quality means doing it right when no one is looking." – Henry Ford


We’re known primarily for our HALT / HASS testing services.  If you’re here and already know how to apply HALT, go directly to Why Choose Us below.

If you’re here because you’ve been told to look into HALT or HASS and need more information, continue reading. 

HALT, Highly Accelerated Life Test or HASS, Highly Accelerated Stress Screen, do not refer to a single test.  They describe testing methods that subject your product to different environmental stresses in an attempt to accelerate fatigue and identify weak links in design or processes and do so in hours instead of days, months or years.  Testing takes place in specialized HALT/HASS chambers.

Typically, HALT testing takes place in four steps:

  1. Thermal Step Stress (Hot and Cold)
  2. Rapid Thermal Cycling
  3. Vibration Step Stress
  4. Combined Environment

As your testing lab, we work closely with you to determine the optimal testing methods to produce the information that you require for the specific operation of your product.  And in fact, pre-test planning is very important in achieving successful test results.

Contact us for a detailed quote or for more information on our services.

Why Choose US?

Collaborating for Intelligent, Customized Results.

When choosing a testing services company, you need more than just the latest technology—you need a long-term partner who understands your needs and provides custom recommendations. At Quality Testing Services, we go well beyond our name to deliver in these crucial areas:

Attentiveness. As a small company, we develop personal relationships with each and every client. We meet with you to get a full understanding of your testing needs, then work closely with you throughout the process. You’d be hard-pressed to get that kind of personal attention from a large corporation.

Personalized guidance. Not sure exactly what testing you need? We have a highly qualified, dedicated consultant on our team. With 35+ years of experience in engineering and testing, he is uniquely equipped to provide one-on-one support and custom recommendations. We don’t just serve up tests—we collaborate with you to ensure that you’re running the right tests for your goals, and that you fully understand the results.

Flexibility. The only constant in the business world is change. As your needs fluctuate, we can seamlessly adapt to handle rush jobs, custom tests, and last-minute modifications—enabling you to overcome challenges and meet your goals for your unique product model.

Value. Our competitive pricing structure makes us a viable choice for small businesses, start-ups, and budget-minded companies.

Our Story

Our founder built and led Qualmark’s in-house HALT/HASS testing lab for 10 years.  Fifteen years ago he bought the lab business from Qualmark and started Quality Testing Services (QTS).  Since then we’ve built our reputation as the top HALT/HASS testing labs in Southern California by offering competitive pricing, unmatched HALT/HASS experience and expertise, state-of-the-art testing equipment, flexible scheduling and a low stress, professional testing experience.

We offer multiple HALT / HASS test chambers with:

  • 100C to +200C; > 50C/min transition rate
  • Up to 60 gRMS, 6 DOF repetitive shock
  • Programmable SSR’s for automation of UUT
  • 6 response accelerometers and 18 auxiliary thermocouples
  • Test fixture fabrication services

What’s Next?

Talk to us. If you have your testing specs, email them to info@qualitytest.net.  If you have questions, email or call 714-903-1155 to talk with an experienced engineer.


Ready to stop cycling through testing vendors and start building a relationship with a personal testing consultant? Contact QTS today for a kick-off conversation.