With the development of science and technology, more and more teaching institutions and laboratories begin to attach importance to the quality and efficiency of sample analysis. In this context, the "Qinghua quality" handheld screen came into being and became an indispensable helper in the field of science education and research. It not only inherits the consistent rigorous attitude and technical accumulation of Tsinghua University, but also combines modern design concepts and practical needs.

This handheld screen is available in three different sizes and is designed to accommodate particulate matter screening tasks in a variety of laboratory environments. For example, in the basic science research stage, the choice of a smaller aperture can help researchers control the sample quality more finely; while in the teaching demonstration process, you can choose a larger grid setting to visualize the principle process. In addition, its lightweight design makes it easy to carry, whether in the classroom or field work can easily cope with various challenges.

In addition to the flexible functional configuration, the device also has excellent operating performance and accurate result presentation capabilities. Its unique vibration mechanism and closely arranged filter system can quickly achieve effective classification of mixed materials in a short time and ensure a high level of accuracy. This is an important competitive advantage for situations that require frequent repetitive operations or high-volume processing.

In order to ensure the stability and reliability of long-term use, please follow the correct maintenance steps. First of all, it is recommended to clean up the residue immediately after each use to prevent blocking the filter hole; secondly, regularly check whether all connection parts are firm and intact so as not to affect the subsequent work performance; finally, try to place a dry and ventilated place during storage to avoid moisture erosion and damage to the integrity of the body structure.

Since its listing, "Tsinghua Quality" handheld screen has been well received by professionals from all walks of life. "As a college physics teacher," a university professor said: "This tool greatly simplifies my teaching process and makes it easier for students to understand and master relevant knowledge points." At the same time, many front-line researchers also reported: "Compared with the traditional method, which is time-consuming and laborious, we can now obtain satisfactory data results in a few simple steps!"

When considering purchasing such professional-grade equipment, it is important to determine the specific application scenario before making a decision. If it is a project mainly aimed at popular science activities for primary school students, a slightly larger model may be more appropriate because it is easy to observe and relatively safe and does not cause harm risks. However, if higher-level academic inquiry is involved, priority must be given to indicators such as measurement accuracy in order to really maximize the utility value.