Classification of laboratory test tubes

How to buy the laboratory test tubes you want, before you need to know the classification of laboratory test tubes to facilitate the purchase.

The test tube is divided into an ordinary test tube, test tubes with branches, centrifuge tube test tube, etc.

The specifications of ordinary test tubes are expressed as outer diameter (mm) × length (mm), such as 15 × 150, 18 × 180, 20 × 200, etc. Centrifuge tubes are expressed in volume numbers.

(1) The flat test tube is a flat-bottomed tube with a flat-bottomed tube, a flat-bottomed tube with a flat-bottomed tube, and a rolled mouth, which is convenient for disinfection of the nozzle.

(3) Fermentation test tube It is a flat-mouthed, round tube with a test bottom of 6 mm and a short (diameter, length of 30 mm).

4) Equipped with a side test tube and a flat mouth tube with a side tube, it is used to connect with a suction tube, insert the rubber of the perforated tube into the tube, and the funnel (in place of the filter and filter volumetric flask) for micro-measurement bottled test tubes: the diameter of the tube is Test the tube on the round mouth. The measurement standard accepts the line, which can directly display the number, and has a filter tube.