Each test sieve is delivered with a free certificate of compliance with the order 2.1 in accordance with DIN EN 10204. It certifies that the metal wire cloth for test sieve and the test sieve itself are manufactured in compliance with the quality assurance instructions according to ISO 9001.
If required, inspection certificates 3.1 in accordance with DIN EN 10204 for test sieves are also available. They document the distribution of aperture widths in graphic and tubular form.
Tests can be carried out at two confidence levels as a certifying or calibrating measurement. For calibration, three times as many meshes are measured, achieving a particularly high level of statistic reliability. The measurements are finally evaluated separately in the warp and weft directions and the results of the measurements are saved for subsequent check measurements.