Work Item
ASTM WK64541
Revision of F1671/F1671M-13 Standard Test Method for Resistance of Materials Used in Protective Clothing to Penetration by Blood-Borne Pathogens Using Phi-X174 Bacteriophage Penetration as a Test System
Rationale
New research confirms that the test results depend upon the type of screen used for this test. To improve test repeatability, for Procedure B. the report must include the screen specification. The old specification of 50% open area has been removed and the standard allows any screen design, but states that different designs may not be comparable with respect to test results. A recommended screen design (FIG. 10) utilizes a hexagonal opening screen with an added smooth surface in the sealing area that will reduce false positive results caused by rough screen material damaging the test specimen. To provide a better seal, closed-cell foam is also recommended. Also, to improve test accuracy, we specify pressure regulation to be 0.04 psi.
Work Item Status
Date Initiated: 07-25-2018
Technical Contact: Lee Portnoff
Item: 001
Ballot: F23.40 (18-02)
Status: Will Reballot Item
Item: 001
Ballot: F23.40 (19-01)
Status: Will Reballot Item
Item: 005
Ballot: F23 (19-05)
Status: Will Reballot Item
Item: 022
Ballot: COS (21-02)
Status: Will Reballot Item
Item: 001
Ballot: F23 (21-03)
Status: Withdrawn From Balloting
Item: 002
Ballot: F23 (21-04)
Status: Ballot Item Approved
Item: 001
Ballot: F23 (21-04)
Status: Ballot Item Approved
Item: 003
Ballot: F23 (21-04)
Status: Will Reballot Item