Test tube is a common laboratory glassware, Liquid or a small amount of solid samples into test tubes, can be used for chemical reaction observation, short-term storage of samples and simple experimental operations, easy to pick up and handle. 

* Glass Material: made from borosilicate glass, offer exceptional chemical and heat resistance. 

* Thick Wall: smooth test tube wall and a round bottom, excellent transparency and strong chemical resistance. 

* High Transparency: Features excellent transparency, allowing easy observation of the internal process and convenient monitoring of the experiment