Hydrostatic Head is a way of measuring how waterproof a fabric is. The resulting measurement in millimetres relates to how high a column of water standing on the fabric would need to be before the water would penetrate the fabric. For the best fabrics results can be as high as 30,000mm, i.e. 30 metres high, before it would penetrate the fabric.

The Hydrostatic Pressure test evaluates a material’s resistance to water penetration. The test is done using a machine that replicates the downward pressure that a water column of such height would create. The machine increases the pressure of water that is pushed against the fabric until water is visible on the other side. The required level of pressure used to force water through the fabric is then converted into a measurement of how high the water column would have been. This provides the result of the Hydrostatic Head test in millimetres.

Digital Hydrostatic Head Tester is used to testing the waterproof properties of fabrics through waterproofing work such as canvas, coated fabrics, hood fabric, tarpaulin, rain-proof fabrics and geotextile.

Internally installed water tank design and original water pressure balance system makes the rate of rise stable and exact.

AATCC 127 Option 2, ISO 811, ISO 1420, GB/T4744, FZT01004 , DIN53886 , JIS L1092, EN20811, EN 13726-3