There are a suitable number of small wooden posts attached to the test tube rack for placing test tubes. People with holes can place the test tubes vertically to continue observing the reaction. People with posts should pay attention to placing the laundry tubes upside down to dry and keep them clean. The washed test tubes should be placed upside down on the test tube rack.

The multifunctional test tube rack comprises a bracket and a bracket, which are connected to each other by a lifting rod. The bracket has a test tube fixing hole, and a spring clip is fixed in the test tube fixing hole. The bracket has a guide hole at the position corresponding to the test tube fixing hole.

A test tube rack (sometimes used to place test tubes and observe certain experimental phenomena) is a basic experimental instrument in the laboratory of tolerance chemistry for drying experiments. The test tube rack is equipped with a corresponding number of small wooden pillars and small holes.

People with small holes can place the test tube vertically for use, or continue to observe the progress of the reaction. People with pillars can place the cleaned test tubes upside down to dry.

The test tube rack is more stable at the top, which can prevent liquid loss. It is also easier, safer, and more convenient to use on a stretcher.

Usually, the alcohol lamp heats the bottom of the test tube. If clamped underneath, the liquid inside the test tube cannot be heated well and is prone to burns from the test tube clamp or hands. Therefore, do not let the wooden test tube clamp burn during heating, as this is unsafe.

If the position of the pliers is close to the bottom of the test tube, the fixation of the test tube will be unstable. In addition, using wooden test tube pliers will increase the probability of being burned by heat, and even the possibility of igniting the test tube pliers is high. Experience has shown that it is appropriate for the pliers to be stuck at one-third of the test tube entrance.

The chemistry dictionary informs examiners about the purpose and precautions of the stand. What is a test tube rack? Simply put, it is a test tube rack, a type of chemical experimental instrument. A test tube (sometimes placed inside a test tube to observe certain experimental phenomena) is a basic experimental instrument for drying experiments in tolerant chemistry laboratories. The test tube rack is equipped with a corresponding number of small wooden pillars and small holes. People with small holes can place the test tube vertically for use, or continue to observe the progress of the reaction. People with pillars can hang the washing test tube upside down to dry.

What is the purpose of a test tube rack? Let's all analyze together below.

The test tube is placed with a protruding bottom, so even without conducting experiments, there is no place to place it.

A test tube is one of the reaction vessels that can be heated to facilitate reactions between solids and liquids.

The test tube clamp can hold the test tube, and when heating, it can hold the test tube to prevent hands from touching the test tube at too high a temperature.

The structure of a general optical microscope can be roughly divided into two parts: one is the mechanical device, and the other is the optical system.

What are the precautions for test tube racks?

Place the municipal pipe on a spacious and flat table. First, place the alcohol lamp on the municipal pipe. Then, according to the height of the alcohol lamp, place the test tube (already installed, if you want to put things in the test tube, you need to install it first) and the fixed test tube with the mouth facing up and the tail fixed to the outer salt part of the alcohol or other substances. Then turn on the alcohol lamp and heat it evenly, followed by localized heating. The main purpose of the test tube rack is to hold the test tube, grasp the upper part of the test tube handle, hold down the pliers, and prevent the test tube from slipping.