It`s used to test water-proof or leakage of fibre,synthetic leather,wrapped paper,etc.The test ways are:（i.e.get the average value of three operations,calculated to the first decimal）

（1）water pressure:raise water position at speed of 1cm/sec,the record the actual water position when three locations of surface of specimen get water penetration.

（2）Fixed water pressure:raise water position at certain height at speed of 1cm/sec.Then pause,immediately record the seconds when three locations of surface of specimen get water-penetration.

（3）Leakage measurement:raise water position to fixed distance（10cm）.immediately stop raising the water to measure the water volume（ml）leaked during certain time.