The standard inspection sieve (also called inspection and analysis sieve, test sieve) can be used in the pharmaceutical industry to determine the particle size distribution, impurity content, solid content and other items of the inspection department.

　　The user can adjust the electronic delay device according to different materials to reduce the error and judge the equipment quality.

　　1. Determine the screening tools to be selected according to the inspected materials and corresponding standards;

　　2. Stack the sieve on the tray base according to the order of aperture from large to small, from bottom to top, and position the sieve by groove or set screw;

　　3. First, put the inspected materials into the upper screen, and then press the screen with the screen head sheathed on the screw to tighten the nut on the screw to press the screen;

　　4. Put the timer switch at the corresponding position, and then turn on the power switch to run the screen machine;

　　5. After the standard inspection screen stops working, unscrew the nut on the screw, remove the screen head, and carefully take away the screen;

　　6. After the operation, remember to cut off the power for safety.

　　The standard inspection screen has the advantages of compact structure, low noise, high efficiency, accurate accuracy, etc., and can generate multiple high-frequency vibration.