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ASTM F 1670 Blood Penetration Resistance

Standard:

ASTM

Method:

ASTM F 1670/1670 M

Title:

Resistance of Materials Used in Protective Clothing to Penetration by Synthetic Blood

Scope

ASTM F 1670 Blood Penetration is used to evaluate the resistance of materials used in protective clothing to penetration by synthetic blood under conditions of continuous liquid contact. Protective clothing pass/fail determinations are based on visual detection of synthetic blood penetration. This test method is not always effective in testing protective clothing materials having thick, inner liners which readily absorb the synthetic blood. This test method is a means for selecting protective clothing materials for subsequent testing with a more sophisticated barrier test as described in Test Method F1671.

This test method does not apply to all forms or conditions of blood-borne pathogen exposure. Users of the test method must review modes for work/clothing exposure and assess the appropriateness of this test method for their specific application. This test method addresses only the performance of materials or certain material constructions (for example, seams) used in protective clothing.  This test method does not address the design, overall construction and components, or interfaces of garments, or other factors which may affect the overall protection offered by the protective clothing.

The values stated in either SI units or inch-pound units are to be regarded separately as standard.  The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

Summary of Test Method

A specimen is subjected to a body fluid simulant (synthetic blood) for a specified time and pressure. Visual observation is made to determine when, or if, penetration occurs.  Any evidence of synthetic blood penetration constitutes failure. Results are reported as pass/fail.

Significance and Use

This test method is based on Test Method F903 for measuring resistance of chemical protective clothing materials to penetration by liquids.  This test method is normally used to evaluate specimens from individual finished items of protective clothing and individual samples of materials that are candidates for items of protective clothing.

Finished items of protective clothing include gloves, are shields, aprons, gowns, coveralls, hoods, and boots.

The phrase “specimens from finished items” encompasses seamed and other discontinuous regions as well as the usual continuous regions of protective clothing items.

Finished items of protective clothing include gloves, arm shields, aprons, gowns, coveralls, hoods, and boots. The phrase “specimens from finished items” encompasses seamed and other discontinuous regions as well as the usual continuous regions of protective clothing items. Medical protective clothing materials are intended to be a barrier to blood, body fluids, and other potentially infectious materials. Many factors can affect the wetting and penetration characteristics of body fluids, such as surface tension, viscosity, and polarity of the fluid, as well as the structure and relative hydrophilicity or hydrophobicity of the materials.

 

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