Isotech celebrates 40 years of temperature innovation

A top British manufacturer of quality calibration systems celebrates 40 years in business this year.

Isotech was founded by John Tavener in 1980 with the single aim of supplying thermocouple reference units to the power industry.

Quickly recognising a gap in the market for effective temperature calibration equipment, John set about to design and build his own solutions from his small, purpose built laboratory.

With an excellent reputation for their products, performance and quality, they have successfully delivered and installed many complete laboratories across Europe, Asia and the Americas and boast an enviable client base including Panasonic and U.S. government agency NASA.

Driven to produce high quality, evolving products to meet the needs of today’s customers, Isotech has developed a number of award winning and innovative products including: the ISOTower ITS-90 Fixed Points, microK Thermometry Bridges, the milliK Precision Thermometer and ISOCAL-6, a multi function calibrator providing Dry Block, Liquid Bath, Surface Sensors, Blackbody and Fixed Point calibration.

A proud moment came in when the microK Thermometry Bridge (jointly engineered with Paul Bramley (Metrosol Ltd) went on to win the Queen’s Award for Enterprise in 2017. In 2019 they were awarded Export Champion for the third year running (Department for International Trade).

The microK Thermometry Bridge won the Queen’s Award for Enterprise in 2017.

Some of Isotech’s innovative Water Triple Point Cell original designs date back to the 1940’s when they were developed by Jim Cross of the Jarrett Instrument Company.

Isotech’s success and longevity can be attributed to a number of factors – John’s entrepreneurial mindset, a team of experts, ever-evolving products and the strong partnerships that have been forged over the years.

John Tavener (President) says “We are very proud of the contribution we have made to temperature metrology over the last 40 years and we are looking forward to what the 2020s will bring.”

As preparations for their celebrations are underway, don’t expect the pace to slow down anytime soon.

With an unsurpassed drive to continue to bring new innovations to market, Isotech will continue to invest in new product development and plans are well underway to extend into new factory space to support further growth.

Isotech provides solutions for all calibration needs, from primary laboratories wishing to maintain national standards, to field engineers calibrating industrial sensors on site.

Isotech exports to over 126 countries through a 90 strong worldwide network of sales agents.

To find out more, please visit or email

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