Objective results
Reproducible and objective measurement results are assured for by the automated testing procedure and the standardized handling.

Test method
GT 1200 tests the characteristic opening size of geotextiles by means of a sieving machine, a water flow device and predefined sand. By analysing the size of the sand grains passing through the material, the opening size can be determined. Standardized according to EN ISO 12956, ASTM D4751 and ASTM D6767.