Filter Paper

Sifting is probably the first precedent of the leak, as it has been used by many ancient civilizations, especially in agricultural-type tasks. The first mesh filters used in a laboratory were introduced by the scientist Von Rittinger in 1867.

A stainless steel mesh consists of a set of intertwined wires in an orderly manner and with the relevant tension. You must meet the criteria set by ISO 9044, both in terms of their characteristics and tolerances, and as regards the system of inspection and verification of the wire.
The parameters that identify a steel mesh filter are different from the filter papers. The most important are:

Mesh opening (w): This is the length of the bisector of the square forming the mesh.
Wire Diameter (d): diameter of the wire before weaving.
Mesh (p): Sum of the mesh size (w) and wire diameter (d).
Size of sieve (For): The relationships between the area of the openings on the
total surface of the mesh. For = (w / w) 2 x 100, expressed in%.
Weight (G): For stainless steel wire fabrics G = 12.61 x (d2 / p), expressed in kg/m2.

As for the quality of the material, it is always stainless steel AISI 304 and 316.
The range consists of filters with mesh size from 20 to 900 μm