Standard Test Method for Bubble Point Pressure of Woven Wire Filter Cloth

Importancia y uso:

5.1 Users of industrial woven wire filter cloth as covered by Specification E2814 commonly desire to specify the largest pore size as determined by converting the pressure result of a bubble point test to an absolute filtration rating in micrometres (also known as microns). This test method requires a comprehensive bubble point test method as well as a valid tortuosity or conversion factor for the calculation. This pore size result may be used as a standard rating of a material specification, a performance evaluation or acceptance criteria for material supplied, or a 1^st article inspection requirement during the weaving of the cloth. The test is conducted using sample material cut from a woven roll of cloth, and hence should be indicative of the manufactured lot, given the application of appropriate tolerances.

5.2 While some users may desire a bubble point test conducted on some finished, fabricated filter unit, the test conditions for this type of test are outside the scope of this test method. The geometric test parameters for this type of specimen must be explicitly agreed to by the user and producer, and is to be considered a custom test method.

Subcomité:

E29.01

Referida por:

E2016-22, E2814-22, E1638-22

Volúmen:

14.02

Número ICS:

19.120 (Particle size analysis. Sieving)

Palabras clave:

absolute filtration rating; bubble point pressure; bubble point test; capillary flow porometry; hydraulic diameter factor; micron rating; pore size; standardized pressure; tortuosity factor;