What are the temperature limits for Pyrex glassware?

Q: What is the highest and lowest temperature that Pyrex glassware should be exposed to?

Pyrex beakers
Pyrex is used in lots of lab glassware – but what is the maximum temperature Pyrex should be used at?

A: Pyrex is suitable for use from -192°C to +500°C

This makes it an ideal choice for lab glassware which will be directly heated. Soda-Lime glass is less suitable for direct heating, so choose Pyrex where possible if you will be applying heat.

Beakers, test tubes and flasks that are made from Pyrex glass are suitable for direct heating by hotplate, heating mantle or bunsen burner.

Remember that heating and cooling should always be slow and steady – Pyrex can withstand huge temperature changes, but if they are too sudden it may still crack due to thermal shock.

Find out more about Pyrex laboratory glassware by following the links above, or ask us below if you have any questions;

One thought on “What are the temperature limits for Pyrex glassware?

  1. In the United States, Pyrex glass is no longer made of heat resistant glass , rather soda-lime glass. Even a modest temperature change causes it to explode instantly.

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