Phase Technology designs, manufactures, sells and services test instruments to measure cold flow properties. The company’s customers include oil refineries, commercial laboratories, fuel distributors, terminals, blenders, aviation companies, and military.

Phase Technology analyzers meet and comply with current ASTM International methods for measurement of pour point (ASTM D5949), cloud point (ASTM D5773 and D7397) and freeze point (ASTM D5972). The company meets and complies with numerous other major international standards and specifications, including those from the Energy Institute (EI).

Supported by 17 years of extensive inter-laboratory “round robin” research, Phase Technology consistently ranks highest for repeatability, reproducibility, sensitivity and equivalency to referee manual test methods. Phase Technology has been recognized with an ASTM Award of Excellence for developing world standards for petroleum cold flow behavior.


Over the years, Phase Technology has celebrated many “firsts” in the industry. They introduced the world’s first fully automatic pour, cloud and freeze point analyzer in 1989. Three years later, the company introduced the first water-cooled analyzer that didn’t need a bulky external chiller bath. Phase Technology remains the first and only company to offer pour, cloud and freeze point testing in a single unit.

In 1995, Phase Technology’s test method for automatic cloud point determination was approved by ASTM, marking the first time that the revered standards organization accepted an automatic procedure for measurement of cloud point.

Similarly, Phase Technology’s pour point and freeze point methods became the first automatic methods of their type ever approved by ASTM.

Today, Phase Technology continues its history of “firsts.” The company’s 70X series analyzer is the first to include many user-friendly features that help optimize workflow. The 70X is the first and only cold flow analyzer to have a full-color LCD touch screen for easy, quick entry of all test functions. The screen also displays valuable test result data, graphics and phase plots. The 70X is the first and only test instrument of its type to have USB ports, allowing quick data transfer to flash storage devices and easy connection with peripherals.

The company’s newest test instrument, the 70Xi, is the world’s first and only fully programmable analyzer that offers fast, one-button testing (called "favorites") and multitasking capabilities. The analyzer’s unique "intellinostics" features provide on-screen troubleshooting, help menus, tutorials, in-depth diagnostics, control chart trending and powerful tools to validate test results.

Phase Technology is also credited with the first and only fully automatic, self-cleaning autosampler system capable of testing 1 to 48 samples. Lab productivity and efficiency are significantly improved as operators are free to perform other tasks while the analyzer automatically runs required tests.

In June, 2017, Phase Technology was aquired by Roper Technologies, a diversified technology company based in Sarasota, Florida. Phase Technology operates under PAC, one of Roper’s organizations, as a business unit within its Physical Properties segment. As a part of this transistion, the company has changed its business name to Phase Analyzer Company, LTD.

Our Core Values

We believe in creating lasting partnerships with our customers. We support our customer relationships with honesty, respect and friendliness.

We consider our suppliers to be important collaborators in maintaining our high standard of quality in design and workmanship.

We appreciate the contribution of all our employees and uphold our shared values of integrity, excellence, loyalty and teamwork.

Mission Statement

We are a dedicated team of skilled, knowledgeable professionals with the shared objective of delivering high quality solutions that positively impact our customer’s success and profitability.

Vision Statement

We will be valued for our ability to provide superior products and exemplary customer service to improve workflow efficiency and reduce operations cost through time savings and reduction of user error.

Executive Team

Company Founders
Charles Tsang, Founder
Norman Tsang, Founder

Senior Management Team
Gordon Chiu, Chief Operating Officer (COO)
Charles Clutter, Vice President, Marketing & Regional Sales
Don Konrad, Controller
Edmund Woo, Manager, Research & Development

Charles Tsang
Charles Tsang started Phase Technology in 1989. He was the originator of over 30 patents for inventions that detect phase transition and assess cold flow properties of fuels and lubricating oils, measurements that are critical to the industry. His research formed the basis for the ASTM test methods used in most Phase Technology analyzers. He retired from the company in 2017.

Prior to Phase Technology, Charles was professionally engaged in engineering and technical research at Texaco and Nova Corporation. During this time, he refined the methodology that led to the launch of Phase Technology.

Charles' numerous technical contributions have been recognized by his peers in the scientific community and the industry at large. He was presented with an Award of Excellence from the American Society of Testing and Materials (ASTM).

He is the recipient of a Gold Medal Award from the Association of Professional Engineers, Geologists and Geophysicists of Alberta (APEGGA) and a Gold Key Award from the Society of Chemical Industries of Canada. Both Charles and his brother, Norman, were awarded an Entrepreneur of the Year Award (2006) from Ethno Business Council of British Columbia.

Charles attended the University of Alberta, receiving bachelor degrees in both Biology and Chemical Engineering. He furthered his academic studies at Cornell University, receiving a Master of Science degree in Chemical Engineering.

Charles retired from Phase Technology in 2017.

Norman Tsang
Norman Tsang co-founded Phase Technology with his brother in 1989. He was responsible for growing the business from its inception in 1989, to the time of his retirement in 2006.

Before Phase Technology, Norman applied his skills at many major international organizations. He was part of a pioneer team that developed the data network transport protocol which became the backbone for internet communication services.

Norman was the software development team leader for the first military GPS and refueling aircraft display system used by the Canadian Armed Forces. He served as a consultant to the U.S. Federal Reserve Bank, helping to build the data network which serves as a vital infrastructure for the U.S. banking system.

Norman graduated in Computing Science from the University of Alberta. He continued his education there in the Master of Science program, majoring in Artificial Intelligence.

Norman retired from Phase Technology in 2006.

Gordon Chiu, Ph.D.
Chief Operating Officer (COO)
Dr. Gordon Chiu holds the position of Chief Operating Officer at Phase Technology. In this pivotal role, Gordon oversees Sales and Marketing, Customer Service, Production and Research and Development.

In addition to his work at Phase Technology, Gordon is active in various international standards organizations. He is a technical contact for ASTM Committee D02 on Petroleum Products, a group that has jurisdiction over 580 standards that cover all aspects relating to the standardization of Petroleum Products and Lubricants.

Gordon is the author of numerous published and research studies and white papers. Gordon received an engineering degree (BASc) from the University of British Columbia. He completed his doctorate at Princeton University.

Charles Clutter
Vice President, Marketing & Regional Sales
As Vice President of Marketing and Regional Sales, Charles Clutter creates and oversees execution of Phase Technology’s strategic marketing and sales programs. He writes and designs the company’s marketing communication materials, including the website.

With a varied career history, Charles has held several senior level marketing, graphic design and copywriting positions. He has worked for international non-profit organizations, web development firms, consumer electronics manufacturers, record labels and music distributors, direct mail catalogers and independent CD retailers.

Charles has a B.S., Business Administration from The Ohio State University with dual majors in marketing and finance. He completed a post-graduate program in Integrated Marketing Communications at Chicago’s DePaul University's Kellstadt Graduate School of Business in Chicago.

Don Konrad
In his role as Controller of the company, Don is directly responsible to the shareholders for corporate forecasting, and financial performance measurement and analysis.

Don has held key positions as Controller and senior financial officer for a variety of tech companies. His noteworthy career accomplishments have improved cash flow and secured favorable funding arrangements, introduced internal controls and financial reporting.

Don is a Certified Management Accountant, and a Bachelor of Commerce graduate from the University of Alberta.

Edmund Woo
Manager, Research & Development
As Manager of Research and Development, Edmund Woo directs Phase Technology’s ongoing innovation and product development initiatives. With over 15 years of experience in the R&D group, Edmund has made significant contributions, from idea conceptualization to design stage to implementation. His efforts have led to the launch of many successful new products that are used in the petroleum industry today.

Edmund majored in Computer Science at the University of British Columbia, earning a Bachelor of Science degree. He began his career at Phase Technology as a software engineer, and has progressed within the company to hold successively higher levels of responsibility and leadership.

In addition to his work in R&D, Edmund is an active voting member in ASTM Committee D02 for Petroleum Products. He regularly represents Phase Technology at various tradeshows and conference meetings throughout the world.

Join Our Team

We fulfill our vision by providing a corporate culture that values integrity, excellence, respect, continuous improvement and teamwork.

We believe in a positive work/life balance and welcome diversity in our work place. We seek highly motivated individuals who are interested in working in a dynamic and growing company.

Click here to view our current job openings.

Learn More:

Phase Technology ASTM Methods

70Xi Series Lab Analyzers

Service & Support

Our Customers Say:

“As an instrument technician, I have watched with interest as Phase Technology has updated their cold flow analyzers with the latest technologies, and as they have been designed for easier service. These two details are very important to me. The improvements in our two PSA70X analyzers have saved us hours of work and freed us from worry about whether the instrument was healthy and in need of adjustment.”

Dan Gathright
Instrument Chemist
ConocoPhillips, Inc.