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.

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.