Gravimetric absorbency testing system

The wettabihty of a fabric is measured by the Gravimetric Absorbency Testing System (GATS). This test is a measure of the abiUty of the fabric to take up hquid spontaneously in the direction perpendicular to its plane (lateral absorbency). The amount of water driven from a reservoir beneath the sample is deterrnined. 

Demand absorbency plate test method can be converted into a 2D radial dynamic wicking measurement method when the liquid is introduced from a point source into the nonwoven fabric (also known as the point source demand wettability test). One example of this method is the Gravimetric Absorbency Testing System (GATS) system mentioned in Section 6.3.4.4, when a point source liquid introduction cell was used. 

In order to ensure the activity of compost inoculum, inert material which works as soil texture is mixed into compost inoculum. The carbon dioxide evolved from the test vessel is determined by using gravimetric analysis of carbon dioxide absorbent. The method which consists of a closed system to capture evolved carbon dioxide, is available to determine the ultimate aerobic biodegradability of plastic materials under controlled composting conditions in a laboratory-scale test. The valuable information of degradation on the molecular structure of copolymers can frequently be obtained by means of isotopic labelling studies based on this test method of a closed system. 

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