Densometers are the accepted instruments for measuring porosity, air-permeability or air resistance of sheet-like materials. The 4340 combines the ability of a low, standard and high pressure densometer and smoothness tester and provides a reading in seconds. An auto-drive mechanism enables the user to program the number of tests and the span they are tested over.
In only seconds, the Akustron measures the air permeability of filter paper, non-wovens and textile fabrics. It offers an operating range between 4 and 400 cfm and is as simple as inserting the sample and pulling the lever. After 3 seconds, the value is shown on the digital display.
(4) Densometers are the accepted standard for measuring the porosity of materials such as papers, wovens, plastics and membranes. All Densometers measure the time required for a given volume and of air (25cc to 400cc) to flow through a standard area of material being tested under light uniform pressure. Certain models, such as the S-P-S Tester, are also used to measure surface smoothness and material softness. Manual and automatic units available. Conform to TAPPI T-460, ASTM D-726-58 & APPITA/AS 1301-420, BS 5926, CPPA D-14, ISO 5636/5, D-202-77, SCAN P-19 & P-53.
Specifications
The Densometer test measures the time required for a given volume of air (25cc to 300cc) to flow through a standard area of material tested, ...
(3) High Pressure Densometers are the accepted standard for measuring the porosity, air-permeability or air-resistance of materials having low permeability. Typical materials include coated papers, plastics and membranes. High Pressure units are recommended whenever a standard unit would yield excessive measurement times. Manual and automatic units available. Conform to TAPPI T-536-88 and ASTM D-726-58, Method B.
Specifications
High Pressure Densometers are the accepted standard for measuring the porosity, air-permeability or air-resistance of materials having low permeability. Typical materials include coated papers, plastics and membranes. High Pressure units are recommended whenever a standard unit would yield ...
The Gurley Model 4301 Permeometer measures the porosity or air-permeability of materials where air flow is an important characteristic relative to their use. These materials might be non-woven or woven textiles, filter and cloth felts, some types of blotting, saturating and absorbent bag papers as well as meshes. Conform to TAPPI T-251, ASTM D-737, DATM 70.0-70 and ISO 5636/1.
