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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A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. The deleterious effects of these chemicals can range from acute trauma such as skin irritation and burn to chronic degenerative disease, such as cancer.

What are ASTM F Safety Standards? |

Since engineering controls may not eliminate all possible exposures, aetm is often placed on reducing the potential for direct skin contact through the use of protective clothing that resists permeation, penetration, and degradation. This test method determines resistance to penetration only.

Resistance to permeation and degradation should be determined by other test methods. 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. For more sensitive analysis use Test Method F to determine permeation. The values in parentheses are for information only. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations asym to use.

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Current edition approved January 10, Originally approved in Last previous edition approved in as F – 99a. Summary of Test Method 4.

If the liquid passes through the specimen, the material fails the test for resistance to penetration of the liquid. However, it is possible that differences in chemical and molecular properties for example, surface tension lead to different results. See Table 1 for parts and materials. A transparent cover is optional. The purpose of the screen is to limit distention of the test specimen to 0. Examples of retaining screens are 11 by 11 nylon screen, 14 by 14 polypropylene screen, and 13 by 13 polyester screen.

Random specimens shall be generated as described in Practice E For nonuniform samples, record the lowest values. The droplet must remain easily visible to ensure that a droplet that penetrates the material will be seen.

If not, one of the following methods has usually been effective in enhancing droplet visibility by producing a characteristic discoloration. A transparent cover see Fig. BoxChicago, IL F — 03 FIG. Also, bring the liquid to the test temperature. With the test cell vertically oriented, allowing the air to vent, carefully,? Use of a funnel is one way to make?

The specimen fails if a droplet of liquid appears or a characteristic discoloration see 9. If this occurs, record the failure, and terminate the test. If this occurs, record it as a 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.

Remove the specimen and gasket from the cell and discard.

Clean any external parts of the test cell touched by the liquid. 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.

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What are ASTM F903 Safety Standards?

If the temperature of the astmm and liquid were different at the start of the test, report both. Precision and Bias NOTE 2—Material is steel. NOTE 2—Material is aluminum. NOTE 2—Material is transparent shatterproof-resistant plastic sheet.

ASTM F–03 防护服用材料耐液体渗透性的试验方法_百度文库

Used for other speci? A Use of a retaining screen is optional.

If a retaining screen is used, include it in the report. V903 Procedure C is that speci? Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

If aetm feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address r903 below.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.