Schlenk tube preparation

How to prepare a Schlenk tube?

This is an important skill which has to be performed correctly in the lab, and you ought to know it in order to perform some experiments in the Chemistry. 

They are useful dealing with noble gases such as argon and helium, they also are places where you could create a vacuum to work safely with reactive substances.

Here we have two briefs made video which explains how to prepare a Schlenk tube properly. To ensure the security during an experiment.

To prepare a schlenk tube we need:

- Rubber-band:

- Vaseline: 

- Silicon cap: 

The result will be this: 

STEP BY STEP INSTRUCTIONS:

"To prepare a Schlenk tube you need to follow these steps"

- First you need to spread out the Vaseline around the stop cog, avoiding the side holes. 

- Secondly you must introduce the stop cog into the hollow of the Schlenk tube and then you take a rubber band. Next you need to twist the rubber band twice, and you need to follow the procedure of all the movements which are on the video, so that finally the stop cog will be secure and can't get out the hollow of the tube. 

- Finally you put the rubber stopper in the hole in the top of the Schlenk tube, and you turn around the tube, and finally to prevent leakage of fluid and make it sure, you have to take a rubber band and encircle it around the rubber stopper. 

WORK DONE IN SAN FRANCISCO DE PAULA SCHOOL CHEMISTRY LAB. 

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References 

http://www.res.titech.ac.jp/~smart/facilities/Schlenk.JPG

http://www.area-integral.net/cat/img/OFICOMS28731.jpg

http://upload.wikimedia.org/wikipedia/commons/thumb/3/33/White_Petrolatum1.jpg/220px-White_Petrolatum1.jpg

http://img.alibaba.com/photo/543053661/butyl_rubber_stopper_for_blood_collection_tube.jpg