Laboratory Hot Plates

[thomsoki]

I am seriously lacking experience in the use of a ceramic laboratory hot plate. I have read somewhere that you should only heat materials in glass containers or it may crack the ceramic plate. Does anyone know anything about this?

[StringJunky]

I am seriously lacking experience in the use of a ceramic laboratory hot plate. I have read somewhere that you should only heat materials in glass containers or it may crack the ceramic plate. Does anyone know anything about this?

Here's the instruction about that in a user manual about one:

 

 

OPERATING TIPS

 

The unit may overshoot the temperature up to 10°C before stabilizing at the

set-point. The two methods suggested to minimize overshoot are:

1. Metal containers minimize overshoot. CAUTION: When heating metal

containers on a ceramic top it is recommended to use the lowest

temperature setting possible to limit thermal stress to the ceramic top.

2. If a glass vessel is used, anticipate overshoot. Start with a setting 5-10°C

below the desired temperature. When the temperature stabilizes at this

lower setting, turn the heat knob to the final temperature. Overshoot is

then reduced to about 1°C.

https://us.vwr.com/assetsvc/asset/en_US/id/8526649/contents

Edited September 30, 2016 by StringJunky