Round Clear Glass Tube Child Resistant Lab Vial

shocked... the test tubes actually have round bottoms that are fired with air! | Interesting production

High borosilicate glass thickened design, thick tube wall

High light transmittance for easy observation

wide-range specifications, various sizes

The glass tubes are dropped into the grooves of the cutting board and placed in preparation.

After being heated by the flame, the wet blade splits the glass tube

Then heat it again and continue cutting the glass tube to the appropriate length.

Send the glass tube for further processing;

The opening of the test tube is processed first and then the bottom. Melt the mouth of the glass tube to form the opening of the test tube

Heat splits the glass tube in two.

Continue to heat until the bottom is closed and flat.

The most interesting thing is the round bottom of the test tube, which is formed by pumping air inside. As long as you accurately control the amount and timing of inflating, the bottom will rise, just like blowing up a balloon.

After high-temperature strengthening in the strengthening furnace, the test tube, our common tool for chemical experiments, is completed.

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