tsinghua 81204 handheld sieve 3 specifications of the size of the sample sieve is designed for school science education design of experimental equipment. The equipment has three different mesh specifications, can efficiently complete the thickness of the sample separation work, very suitable for teaching demonstration and student experiment operation. This article will detail the unique function of this handheld screen and its application value in school science education, and help teachers and students make better use of this practical tool for scientific exploration.

Design Concept of Handheld Screen in Tsinghua 81204

Tsinghua 81204 handheld screen is designed to simplify the sample handling process in the laboratory, especially suitable for beginners and basic science education. Its lightweight design is easy to carry, and it has high-precision mesh specifications to ensure that every screening can achieve the desired effect. This handheld screen is not only suitable for school science courses, but also to meet the basic needs of scientific research institutions.

Specific parameters and uses of the three mesh sizes

Tsinghua 81204 handheld screen is equipped with three different diameter mesh, respectively 2mm, 1mm and 0.5mm. These mesh specifications can be adapted to different types of samples, such as soil, sand, powder, etc., to meet various experimental requirements. 2mm sieve is suitable for preliminary screening of large particles; 1mm sieve is suitable for further classification of medium-sized particles; 0.5mm sieve is used for accurate separation of fine samples.

Handheld sieve for ease and safety of operation

Tsinghua 81204 handheld screen design focus on user experience. The handle part is made of non-slip material to ensure that it is stable and does not slip during operation. The sieve body part is made of high-strength stainless steel, which is durable and can prevent rust. In addition, the edge of each sieve hole is rounded to avoid scratching fingers and ensure the safety of use.

Principles and procedures for efficient sample separation

The working principle of Tsinghua 81204 handheld screen is based on the particle size classification under the action of gravity. When the sample is poured into the screen, the larger particles will remain in the upper layer, and the smaller particles will fall through the screen holes to the next layer. Users can choose the appropriate mesh size according to their needs, and easily realize the efficient separation of samples. The specific steps include: selecting the appropriate mesh size, sprinkling the sample evenly on the screen, and gently shaking the screen until the sample is completely classified.

Application examples for multiple experimental scenarios

Tsinghua 81204 handheld screen is not only suitable for basic physical chemistry experiments, but also for biology, geology and other disciplines. For example, in geography class, teachers can use it to show the particle distribution of different types of soil; in chemistry experiments, students can observe the difference in the dissolution rate of different substances by sieving. In addition, it is an important tool in environmental monitoring and agricultural research.

Practical Application Cases in Classroom Teaching

When a biology teacher in a middle school explained the influence of plant roots on soil, he used Tsinghua 81204 handheld screen to show the influence of different plant roots on soil particle size. Through hands-on operation, the students intuitively saw the changes in soil structure by plant roots, and deepened their understanding of knowledge points. This interactive way of learning greatly improves the interest and participation of the classroom.

Improving students' practical ability and scientific literacy

Tsinghua 81204 handheld screen is not only an experimental tool, but also an important means to cultivate students' practical ability and scientific thinking. Through hands-on practice, students can not only master basic experimental skills, but also learn how to analyze data, make hypotheses and verify conclusions. These abilities are invaluable for their future scientific research and personal development.

Teaching aids for teachers

For teachers, Tsinghua 81204 handheld screen is an indispensable teaching aid. It can help teachers explain complex scientific concepts more vividly and vividly, and stimulate students' interest in learning. In addition, because of its simple operation and low cost, it is very suitable for large-scale promotion and use, and has become a beautiful landscape in modern science education.

Maintenance and Maintenance Skills of Handheld Sieve in Tsinghua 81204

In order to ensure the long-term stable operation of Tsinghua 81204 handheld screen, regular cleaning and maintenance is very important. After use, the residue on the screen should be cleaned in time, and the residue can be gently scrubbed with a soft brush. If necessary, it can be rinsed with water and dried thoroughly. Store in a humid environment to prevent metal parts from rusting.

User evaluation and feedback

"This handheld screen is very practical and easy to operate. Children like it very much. Especially when doing soil experiments, the effect is very good."

"I am a college student, often need to use screening equipment. Tsinghua 81204 handheld screen is not only affordable, but also stable performance, is a good helper for me to do experiments."

Selection Guide: How to Choose the Right Hand-held Sieve

There are many types of hand-held screens on the market. How to choose the most suitable one? First, consider the specific needs of the experiment and determine the required mesh specifications; secondly, pay attention to the material and manufacturing of the product