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YY/T 0691-2008Clothing for protection against infectious agents—Medical face masks—Test method for resistance against penetration by synthetic blood(fixed volume, horizontally projected) (English PDF)

传染性病原体防护装备 医用面罩抗合成血穿透性试验方法(固定体积、水平喷射)

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Issued by

NMPA

Level / Type

Industry · Recommended

Issue date

October 17, 2008

Implementation date

January 1, 2010

Scope

YY/T 0691-2008 is the English-translated version of 传染性病原体防护装备 医用面罩抗合成血穿透性试验方法(固定体积、水平喷射).

YY/T 0691-2008 is the Chinese standard "Clothing for protection against infectious agents—Medical face masks—Test method for resistance against penetration by synthetic blood(fixed volume, horizontally projected)".

Its scope clause reads: This standard describes a laboratory test method for measuring the resistance of medical face masks to penetration by a splash of synthetic blood.

This standard primarily addresses the performance of materials or certain material constructions used in medical face masks.

This standard does not address the performance of the medical face mask's design, construction, interfaces or other factors which may affect the overall protection offered by the medical face mask and its operation (such as filtration efficiency and pressure drop).

This test method does not address breathability of the medical face mask materials or any other properties affecting the ease of breathing through the medical face mask.

This test method evaluates the protective performance of medical masks, but it does not evaluate the performance of medical face masks as a protection against contamination via airborne exposure pathways or in the prevention of the penetration of aerosolized body fluids deposited on the medical face mask. Its clauses include terms and definitions.

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Document preview — YY/T 0691-2008

National Standard of the People's Republic of China

Issued by: National Medical Products Administration of the People's Republic of China

Contents

  • Foreword i
  • Introduction ii
  • 1 Scope
  • 2 Normative references
  • 3 Terms and definitions
  • 4 Principle
  • 5 Test apparatus and materials
  • 6 Specimens
  • 7 Procedure
  • 8 Report
  • Annex A (Normative) Formula of synthetic blood
  • Annex B (Informative) Modification of equations for stream velocity and time of delivery
  • Bibliography

1 Scope

This standard describes a laboratory test method for measuring the resistance of medical face masks to penetration by a splash of synthetic blood.

This standard primarily addresses the performance of materials or certain material constructions used in medical face masks. This standard does not address the performance of the medical face mask's design, construction, interfaces or other factors which may affect the overall protection offered by the medical face mask and its operation (such as filtration efficiency and pressure drop).

This test method does not address breathability of the medical face mask materials or any other properties affecting the ease of breathing through the medical face mask. This test method evaluates the protective performance of medical masks, but it does not evaluate the performance of medical face masks as a protection against contamination via airborne exposure pathways or in the prevention of the penetration of aerosolized body fluids deposited on the medical face mask.

2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below.

GB/T 2828.1-2003 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection (ISO 2859-1:1999, IDT)

GB/T 5549-1990 Surface active agents - Determination of surface tension by drawing up liquid films (neq ISO 304:1985)

3 Terms and definitions

For the purposes of this standard, the following terms and definitions apply.

3.1 aerosolized body fluids

body fluids which have been dispersed into air as very small liquid droplets

3.2 airborne exposure pathway

inhalation routes of exposure to the medical face mask wearer

Note: Inhalation routes of exposure do not include streams of blood or body fluid that may be expelled from a wound.

3.3 blood-borne pathogen

any bacterium, virus, or other microbe carried and spread in blood or other body fluids

3.4 body fluid

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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