Why Choose PYREX®?


PYREX® the brand of choice

Pyrex®. The name is synonymous with cookware all over the world, and not only cookware. Science labs have been using PYREX® as their ‘go to’ for quality glassware since early in the 20th century. The range since the early days has blossomed from flasks and beakers to test tubes, burettes and high precision jointed glassware, where the need for good fit without leakage, alongside being easy to remove again is paramount.

PYREX® can now be found in nearly every research facility in the world. Quality, longevity and safety are all words you can associate with PYREX®, but what makes this long lived brand so special?  

Everyone has heard of the brand name PYREX® – we have all got at least one item of Pyrex® cookware in our homes, be it a measuring jug or an oven-proof dish. PYREX® is synonymous with quality; thermal resistant glassware that we trust to leave in our ovens at temperatures of 200°C for long periods of time.

Well, it is that same strong, heat resistant, trusted glassware that is sold through the PYREX® brand to school laboratories up and down the country. 

The history of PYREX® 

Originally PYREX® was developed to provide a solution to an ongoing problem on America’s railroads: In 1914 Jessie Littleton, a physicist for Corning glassworks in New York, was looking for a temperature resistant glass to replace the constantly breaking ones in the train lanterns (mainly due to the cold weather). His wife asked if the glass would work in the oven as her earthenware dish had cracked, so he gave some to her and Pyrex® cookware was (almost) born. By 1915 consumer Pyrex® cookware products were available. 

The unique properties of the glass made it unlike anything else on the market — it was able to withstand temperature changes, didn’t discolour, didn’t react with ingredients to change the taste of food (like cast iron), and didn’t retain food smells after washing (like ceramics and earthenware).

PYREX® was patented in 1915 and has been used in many groundbreaking inventions and developments since then, including the discovery of penicillin, and by the 1950s PYREX® vessels were being used to grow cultures of the first Polio vaccine. PYREX® has been in production the UK for over 90 years, initially with James A Jobling and Co Ltd in Sunderland in 1921 when he landed a licensing deal with Corning to supply PYREX® to the British Empire (of the time). 

Why is PYREX® special?

The properties of PYREX® are such that it is possibly the most versatile glass around. It can be safely used over a temperature range from -192°C to +500°C, it has excellent chemical resistance to even the most aggressive acids and bases and both factors have made it the first choice in some of the most demanding scientific applications. Over the years chemical resistant labelling has been added to the products, further adding to this products’ versatility in the lab. 

In the school environment PYREX® is an ideal choice because of its resistance to heat: There is far less chance of breaking and ‘hot spotting’ on beakers, flasks and test tubes being heated, and therefore it is a safe alternative to cheaper, less resistant glassware in the market. 

PYREX® is made of Borosilicate glass 3.3. The glassware is protected against thermal breakage and mechanical shock because of the slow and careful annealing process during manufacture, and the chemical resistance of PYREX® is excellent, making it an ideal storage container for all your acidic or basic solutions.

The chemical resistant labelling ensures longevity of your glassware, especially pieces that are regularly in the dishwasher. The labelling is clear and a good contrast to show up well whatever solution is inside the container, especially useful when measuring and using equipment like burettes.

The name PYREX® was derived from the Latin: Pyro meaning fire and rex, meaning king – and now you can see why!


Have a look at some of the key features and benefits of PYREX®



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