Storing Stuff and Sticking Stoppers

At the end of a grueling lab session, you re naturally anxious to leave. The reaction mixture is sitting in the joint flask, all through reacting for the day, waiting in anticipation for the next lab. You put the correct glass stopper in the flask, clean up, and leave. 

Stuck but good And you can probably kiss your flask, stopper, product and grade goodbye  

Some material has gotten into the glass joint seal, dried out, and cemented the flask shut. There are a few good cures, but several excellent preventive medicines. 

If the material you have to store does not attack cork, this is the cheapest, cleanest method of closing off a flask. 

A well-greased glass stopper can be used for materials that attack cork, but 

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Storing Stuff and Sticking Stoppers Corking a Vessel The Cork Press... 

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