According to the JIS standard, the micron stainless steel sieve is defined such that each wire should vertically intersect, shaping a regular square as the hole in the screen (plain weave). When one side of the square hole size (aperture) is less than 45 μm, and the mesh can be woven into a twill by a wire (twill weave).

The durable stainless steel test sieves are also called micron stainless steel sieve, standard sieves with stainless steel mesh which are ​designed for the coffee industry and is used to grade coffee beans.

The proven doube-layer stainless steel test sieves consists of a sturdy stainless steel screen frame for high stability for reliable screening. Paying close attention to the specific requirements of the grid, the fabric of each test screen is precisely attached to the frame and tensioned.