ASTM F903 PDF

Summary of relevant information contained in. ASTM F Standard Test Method for Resistance of. Materials Used in Protective Clothing to Penetration by . Designation: F – 03 Standard Test Method for Resistance of Materials Used in Protective Clothing to Penetration by Liquids1 This standard. ASTM F Standard Test Method for Resistance of Materials Used in Protective Clothing to Penetration by Liquids.

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The purpose of the screen is to limit distention of the test specimen to asgm. Current edition approved January 10, Use of a funnel is one way to make?

Link to Active This link will always route to the current Active version of the standard. Finished items and specimens are particularly important areas for testing as they consist of discontinuous and seamed regions of protective clothing.

What are ASTM F903 Safety Standards?

B Procedure C is that speci? In this test method, all procedures involve liquid exposure that is continuous over the duration of the test. BoxChicago, IL Areas such as hands, legs, eyes, face and torso should be completely protected. See Table 1 for parts and materials. A number in parentheses indicates the year of last reapproval.

ASTM F–03 防护服用材料耐液体渗透性的试验方法_百度文库

If not, one of the following methods has usually been effective in enhancing droplet visibility by producing a characteristic discoloration. It is recommended that any special means used to seal specimens in the test cell be validated for providing sufficient integrity of the specimen in the test cell, not contribute to specimen damage, and not interfere with the observation of liquid penetration. Examples of retaining screens are 11 by 11 nylon screen, 14 by 14 polypropylene screen, and 13 by 13 polyester screen.

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Historical Version s – view previous versions of standard. Precision and Bias For more ast analysis use Test Method Ast to determine permeation. NOTE 2—Material is steel.

If this occurs, record the failure, and terminate the test. Flush the test cell with an appropriate wash liquid to remove or render harmless any traces of the test chemical.

It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

This is done to determine their resistance to visible penetration, which occurs with continuous chemical contact to the outer portion of the clothing. A transparent cover is optional. Remove the specimen and gasket from the cell and discard. If a retaining screen asfm used, include it in the report.

The droplet must remain easily visible to ensure that a droplet that penetrates the material will be seen. The specimen fails if a droplet of liquid appears or a characteristic discoloration see 9.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. However, it is important that the selected retaining screen does not interfere with the observation of liquid penetration or affect the sealing of the specimen in the test cell.

F are the standard methods of testing used for chemically resistant workwear. Suggestions are provided for how to select an appropriate procedure for liquid contact. A Use of a retaining screen is optional. Inadequate sealing of the specimen can lead to a false result observed liquid penetration that is due to the method of sealing rather than penetration through the specimen.

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Passing results indicate that no liquid penetration was observed over the duration of the test exposure. However, it is possible that differences in chemical and molecular properties for example, surface tension lead to different results.

A transparent cover see Fig. This is therefore considered a general failure point. Special means used to seal specimens in the test cell should be documented in the report.

If this occurs, record it as a failure and terminate the asym. The resistance to visible penetration of the test liquid is determined with the liquid in continuous contact with the normally outside surface of the test specimen. Use Test Method F to provide a complete f9903 of astj liquid integrity of protective clothing or ensembles, particularly areas of the clothing or ensembles that cannot be directly assessed by this test method, such as interface areas between different items of clothing and equipment.

For nonuniform samples, record the lowest values. Test specimens of protective clothing are exposed to a variety of chemical and molecular properties. If the material was taken from garments, report under subheadings for each material, composite, type of seam, or other constructions tested, and its position on the garment. A superscript epsilon e indicates an editorial f093 since the last revision or reapproval. This test method determines resistance to penetration only.

Specific hazards are given in Section 7. NOTE 2—Material is transparent shatterproof-resistant plastic sheet.

Originally approved in