JOMESA - Drum Stretch Filterholders

This type of filterholders flattens the membrane and secures it against slipping. By a smart mechanical trick the membrane is clamped and stretched on this holder (similar to a skin on a drum). Therefore a glass cover is not neccessary and the membrane can be transported to other analysis instruments (e.g. REM-EDX). Drumstretch for optical HFD applications: Filtermembrane background is plastic, thus mesh filters can be evaluated without background interferences.