Labvida heavy duty beakers are designed for heating by hot plate, flame, oven, microwave or heating mantles.
Labvida heavy duty beakers can withstand repeated standard autoclave cycles of 121°C at 15 psi for 5 minutes.
In normal service Labvida heavy duty beakers can be heated many times to 230°C. It even can be heated to 490°C in extreme service one time.
About low temperature, Labvida heavy duty beakers can be cooled to -230°C.
DO NOT plunge product directly into a liquid coolant. It should be placed in the vapor phase of the liquified gasses for slow cooling prior to immersion in the coolant.

Tips:
We recommend that when the liquid is heated in the beaker, it should not exceed 2/3 of the volume of the beaker.
When heating corrosive liquids, in order to avoid the liquid splashing on skin, we recommend using watch glass lids.
In order to prevent the beaker from being cracked during stirring, the glass rod must not touch bottom or wall of the beaker when dissolving substance with a glass rod.