A test tube rack is a chemical experimental instrument. Or stainless steel or plastic shelves, there are many specifications. A test tube rack is a basic experimental instrument used in chemistry laboratories to place (or sometimes observe the phenomena of an experiment on) and dry test tubes. A corresponding number of small wooden pillars and small holes are attached to the testing rack. If there is a small hole, the test tube can be placed vertically for use or continue to observe the progress of the reaction. If there are pillars, the washed test tubes can be inverted and dried.

A corresponding number of small wooden pillars are attached to the test tube rack for placing test tubes. If there are holes, the test tube can be placed vertically to continue observing the progress of the reaction. If there is a column, the washed test tube can be inverted and dried, and the cleaned test tube should be inverted on the test tube rack.

The multifunctional test tube rack includes a base and a bracket, which are connected by a lifting rod; There are test tube fixing holes on the bracket; There is a spring clip fixed in the test tube fixing hole; There are guide holes on the base corresponding to the fixed holes of the test tube.

Precautions for test tube rack:

Pinching it in the upper part of the test tube is more stable and can prevent liquid overflow, making it easier, safer, and more convenient to hold.

Usually, the alcohol lamp is heated against the bottom of the test tube. If clamped underneath, the liquid inside the test tube cannot be heated well, which can easily burn the test tube holder or hands, making it unsafe to prevent the wooden test tube holder from being burned out during heating.

If the clamp is located near the bottom of the test tube, it can easily lead to unstable fixation of the test tube. In addition, if wooden test tube clamps are used, the probability of combustion will be higher, and even ignite the test tube clamps. Experience has shown that it is appropriate to clamp the clamp one-third away from the opening of the test tube.