Generally in accordance with the order of the first down and then up, from left to right principle of connection.
1, the glass tube into the rubber stopper with holes: the left hand to take the rubber stopper, the right hand to take the glass tube, the glass tube to be inserted into the stopper first end of the glass tube wet with water, and then a little force to turn, so that it is inserted;
2, connecting the glass tube and rubber tube: the left hand to take the glass tube, the right hand to take the rubber tube, the first mouth of the glass tube to wet with water, and then a little force can be inserted into the rubber tube glass tube;< /p>
3, in the mouth of the container rubber plug: left hand holding the container, right hand holding the rubber plug, the rubber plug should be slowly turned into the mouth of the container.
Extended information:
1, first of all, will be plugged tightly test tube mouth, and then the other end of the conduit, into a beaker full of water, with a hand grip on the outside wall of the test tube, observe the phenomenon of the beaker, if the beaker of the conduit in the mouth of the bubbles appeared, this time we say that the device airtightness is good.
2, then when you let go of your hand, we can also see is that a section of water column in the interior of the tube, or the liquid level inside the tube is rising, which also proves that the device is well airtight.
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