Glassware

PYREX glass has excellent thermal properties at both high and low temperatures. The maximum recommended working temperature for PYREX laboratory glassware is approx 500°C (for short periods of time only).

PYREX glass also performs well at lower temperatures. This glass can withstand conditions down to -190°C and is suitable for use with liquid nitrogen. In normal laboratory use, temperatures of -70°C are easily sustained for lengthy periods.

Special care should always be taken to avoid sudden changes in glass temperature as this may fracture the glass, and cooling should be achieved in a slow uniform manner.

Usage temperature ranges of our PYREX glassware:

Working point = 1252°C
Softening point = 821°C
Annealing point = 565°C
Strain point = 510°C
Recommended usage point = Below 500°C