BUNDESMANN WATER TESTER

The Bundesmann apparatus is usedto determine the resistance and the resistance to penetration by water of water repellent fabrics  which are permeable to air  Four specimens of the fabric under test are simultaneously exposed to a simulated heavy shower of controlled intensity of the specimen is subjected to a rubbing action The increase in mass of the specimen during exposure to the shower is determined and any water passing through the fabric is collected and its volume determined.