The flask assembly will heat up in hot water, pressure will build up inside the flask and it could explode.
- The fingertip is kept in place throughout the transfer to prevent the seepage of the trapped air from the flask.
- Inside the tank, the flask is constantly upside down. The flask can be tipped at an angle to allow the air to escape.
- The entire contents of the pint will erupt out if only the bottom of the container is heated.
- Rubber stoppers are ideal for plugging joints or holes in laboratory glassware and creating a liquid-tight seal.
What is the proper method for inserting glass tubing into a rubber stopper?
- Lubricate the end of the glass tubing with a few drops of water, washing-up liquid, glycerol, or vegetable oil.
- Hold the glass tubing close to where it enters the hole in the rubber stopper.
- Ease the tubing into the hole with a gentle twisting motion.
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