Glass is inert, temperature tolerant and resistant to chemical corrosion, making it a staple in laboratories. General glass tolerances for freezing to heating “guidelines” are that you should only heat frozen glass at a rate of approx. 20 degrees Celcius or less per minute to prevent it from breaking, or a minimum of 5 minutes to bring a freezing container up to boiling.
If your procedures require you to move glass from the freezer to a hot place, remember to allow the temperature to ramp up slowly and you will minimize lab mishaps and chemical spills.
Plastic Coated Glass Bottles keep chemists safe when working with hazardous chemicals by combining the chemical resistance of glass with the safety of plastic. The plastic safety coating protects the container from being affected by pressure build up, and if the glass does break for some reason, the plastisol can contain the chemicals in the bottle long enough to allow for proper disposal.
