understand the unique characteristics and multiple uses of Tsinghua 81204 hand-held sieve 3 size size sample sieve. This handheld screen is specially designed for primary school science and education instruments and experimental equipment, suitable for screening and classification of materials with different particle sizes. This article will detail how it works, how to use it, and its educational value to help teachers and students make better use of this practical tool.

Product Overview: Versatile Science Tool

Tsinghua 81204 Handheld Sieve 3 Size Coarse and Fine Sample Sieve is a scientific tool with multiple functions. It is not only suitable for teaching demonstration in primary school science classroom, but also for laboratory experiments in secondary schools and universities. The handheld sieve has three different sizes of screens for efficient and accurate sample screening and classification. Whether it is soil, sand or other granular materials, it can be easily handled.

Unique Features: Efficient Screening, Accurate Classification

Tsinghua 81204 hand-held sieve 3 size size sample sieve has a number of unique characteristics, making it unique in the market. The first is the three-size screen design, each screen has a different aperture size, which can meet different screening needs. Followed by the lightweight handheld structure, easy to carry and operate, especially suitable for classroom teaching and outdoor experiments. In addition, the hand-held screen is very easy to operate, even the primary school students can easily master.

Working principle: scientific and efficient screening mechanism

Tsinghua 81204 hand-held sieve 3 size size sample sieve using scientific and efficient screening mechanism. The screen is composed of three layers of metal nets with different apertures, which decrease from top to bottom. When the material is poured into the top-most screen, the larger particles are retained in the first layer, the smaller particles pass through the first layer into the second layer, and the smallest particles pass through the second layer into the third layer. By shaking the screen up and down, the material can be fully dispersed on the screen, so as to achieve efficient screening. This multi-level screening method can not only improve the screening speed, but also ensure the accuracy of the screening results.

Usage: Easy to learn, easy to operate

In order to allow users to better use the Tsinghua 81204 handheld sieve 3 size coarse and fine sample sieve, we provide a detailed guide for use. First, prepare the material that needs to be screened and pour it evenly into the top-most screen. Then, hold the handle with both hands and gently shake the screen up and down to fully disperse the material on the screen. After the screening is completed, the materials on each layer are collected respectively. The whole process is easy to learn, very suitable for teaching use. Through the combination of graphics and text, users can easily master the operation method.

Educational Value: Cultivate Scientific Thinking and Stimulate Interest in Inquiry

Tsinghua 81204 Handheld Sieve 3 Size Coarse and Fine Sample Sieve plays an important role in science education. It can help students understand and master the knowledge of physics, chemistry and other disciplines, such as density, particle distribution and other concepts. Through practical operation, students can observe the separation process of different particles, so as to deepen their understanding of theoretical knowledge. In addition, this handheld sieve can also stimulate students' interest in inquiry and practical ability, so that they can learn scientific methods and skills in practice.