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What does penetration index mean? Does 0% for a specific chemical mean that nothing can pass through?

April 26, 2017chemical index mean pass penetration

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What does penetration index mean? Does 0% for a specific chemical mean that nothing can pass through?

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No. The test as per EN 368 measures liquid penetration through a fabric by simulating exposures to small amounts (10 ml) for 1 minute only. When exposed to larger quantities and for a longer time, considerable percentages may pass through. To determine barrier effectiveness against a specific chemical, please refer to permeation data.