Mardens Logo
Facebook logoTwitter logoView Mardens Ltd's LinkedIn profilePinterest
01268-565-900
Loading...

EN14126

PERFORMANCE REQUIREMENTS AND TEST METHODS FOR PROTECTIVE CLOTHING AGAINST INFECTIVE AGENTS

 

This standard specifies requirements and test methods for reusable and limited use protective clothing providing protection against infective agents.
Protective Clothing against infective agents; bacterial, viral and other micro-organisms has two main functions:

  1. To prevent infective agents from reaching (possibly injured) skin.
  2. To prevent the spreading of infective agents to other people and other situations eg. eating or drinking.

For materials to comply with EN14126, they must undergo 5 additional tests as follows:

ISO/FDIS 11603

Penetration test using synthetic blood

This text identifies the pressurisation at which the infected synthetic blood penetrates the material. The higher the class, the greater the protection of the fabric.

Class
Exposure Pressure [kPa]
6
20
5
14
4
7
3
3.5
2
1.75
1
0
 
ISO/DIS 22611

Resistance to penetration by biologically contaminated aerosols

This test is used to assess the barrier's effectiveness against biologically contaminated aerosols. A bacterium solution is suspended in an aerosol and sprayed on to both an unprotected cellulose nitrate membrane and one covered with the test material. Both membranes are analysed to establish the bacterial load and the results are classified by the penetration ratio. The higher the class, the greater the protection of the fabric.

Class
Penetration ratio without/with test material [log]
3
> 5
2
> 2
1
> 1
 
ISO/DIS 22610

Resistance to penetration by bacteria

This test superimposes a bacterially contaminated donor material on the test material and subjects it to mechanical rubbing. The results are recorded in accordance with breakthrough times ie. the point at which the bacteria penetrates the barrier material measured in minutes as highlighted in the table below. The longer the breakthrough time, the higher the class and therefor the greater the protection of the fabric.

Class
Bacterial Penetration [min]
6
> 75
5
> 60
4
> 45
3
> 30
2
> 15
1
< 15
 
ISO/DIS 22612

Resistance to penetration by contaminated dust

A pre-sterilised material is fixed in a testing apparatus and administered with contaminated talcum powder (Bacillus Subtilis). An agar plate is placed underneath the material while it is shaken. The particles, which penetrate the material, are analysed after incubation of the agar plate and the results are measured in penetration log units as highlighted in the table below. The higher the class, the greater the protection of the fabric.

Class
Penetration ratio without/with test material [log]
3
≤ 1
2
≤ 2
1
≤ 3
 
ISO/DIS 16604

Resistance to penetration by viruses

This test uses a liquid (instead of synthetic blood) contaminated with a bacteriophage or virus to identify the pressurisation at which the liquid penetrates the material. The higher the class, the greater the protection of the fabric.

Class
Exposure Pressure [kPa]
6
20
5
14
4
7
3
3.5
2
1.75
1
0