About Advanced Test Concepts

Advanced Test Concepts, LLC (ATC) has offered it’s customers high quality, innovative and affordable Test & Measurement products for more than 25 years. ATC developed the patented Micro-Flow Technology to meet the challenges of leak and flow testing. ATC’s employees believe that innovation, excellent product quality and customer support, along with the highest level of integrity and accountability are our essential values. Those values and products have made ATC an industry leader.


Pfeiffer Vacuum is one of the World’s leading providers of vacuum and testing solutions with over 50 years experience in helium leak detection. On February 20, 2017 Advanced Test Concepts joined the Pfeiffer Vacuum team, creating a complete line of quality leak testers and detectors for our valued customers. Learn more about Pfeiffer Vacuum and their products by visiting their website below.

Brian Pahl


As the President of ATC Brian is responsible for running all facets of the business. Brian has a proven executive management track record and over 20 years of experience driving sales growth with clear visions and strategies. He holds a bachelor’s degree in Engineering Technology as well as an MBA from the University of Findlay.

Alex Ivanchenko PhD.

Laboratory / Quality Manager

With a PhD in Engineering Science and Mechanics Alex leads our Laboratory and R&D teams as the Laboratory/Quality Manager and Senior Metrologist. Alex is reponsible for the control and verification of calibration and calibration equipment in our A2LA Accredited Laboratory. Alex also helps to develop test protocols and reports for our development team. 

Roz Wyatt

Administrative Services Manager

Roz has been with ATC since 2002 and currently leads our team as the Process Manager. Ensuring product and service orders move through the company efficiently and effectively to meet the growing demand of customer applications. She holds a bachelor’s of science degree in Psychology from Purdue University.

Chuck Davidson

Business Development Manager

Chuck directs his team in helping the Pfeiffer/ATC leak detection group in development and application of leak testing and flow measurement techniques. Chuck is a key component in solving some of the most difficult and demanding leak testing problems across all markets including the automotive, consumer electronic, pharmaceutical packaging and medical device industries.