This handheld sample sieve (model 81204) produced by Tsinghua University is equipped with three types of screens designed for laboratory and educational scenarios. Whether it is scientific research experiment or teaching demonstration, it can help you quickly complete the task of classification of coarse and fine particles, improve work efficiency and ensure accuracy at the same time. As a high quality science and education instrument, its portability and practicability are highly praised by users.

Dive into fundamental concepts with our molecular structure model and learn how organic molecular crystal structures play a crucial role in chemistry experiments. Ideal for middle and high school students keen on understanding scientific intricacies.