BUNDESMANN WATER TESTER

The Bundesmann apparatus is usedto determine the resistance and the resistance to penetration by water of waterrepellent fabrics  which are permeable to air  Four specimens of the fabricunder test are simultaneously exposed to a simulated heavy shower of controlledintensity of the specimen is subjected to a rubbing action The increase inmass of the specimen during exposure to the shower is determined and any waterpassing through the fabric is collected and its volume determined