EN ISO 343
PROTECTIVE CLOTHING FOR RAIN
EN ISO 343 – This European standard specifies the minimum requirements and test methods applicable to protective clothing for the effects of precipitation.
EN ISO 343 CERTIFICATION REQUIREMENTS
TEST METHOD
DESCRIPTION
MINIMUM COMPLIANCE VALUES
EN 20811
To test a hydrostatic pressure increment of (980 ± 50) Pa/min, the following samples will be made:
- Five samples to test the material before pre-treatment.
- Five samples to test the seams before pre-treatment.
- Five samples to test the material after pre-treatment with dry cleaning and/or washing.
- Four treatments to test after pre-treatment with abrasion.
- Four samples to test after pre-treatment with repeated flexion.
- Four samples to test after pre-treatment with petroleum and oil.
If a sample obtains different classes on different tests, the lowest class must be the one indicated.
| Water penetration resistance Wp | Class 1 | Class 2 | Class 3 |
| Material before pre-treatment | Wp ≥ 8000 Pa | Does not need to be tested* | Does not need to be tested* |
| Material after each pre-treatment | Does not need to be tested* | Wp ≥ 8000 Pa | Wp ≥ 13000 Pa |
| Seams before pre-treatment | Wp ≥ 8000 Pa | Wp ≥ 8000 Pa | Wp ≥ 13000 Pa |
*Does not need to be tested, as the worst situation for classes 2 and 3 is after pre-treatment.
Note: several requirements must be met for each class.
EN 31092
Resistance to water vapour, Ret (EN 31092): tests the entire group of materials, except for anti-capillarity grooves and retroreflective and fluorescent bands.
Water vapour resistance Ret
m² · Pa/W
Class 1* – Ret > 40
Class 2 – 20 < Ret ≤ 40
Class 3 – Ret ≤ 20
*Class 1 has a limited time of use
ISO 4674
The material of the exterior layer must withstand tear resistance.
≥ 25 N
EN 5077
Determination of dimensional variations upon home washing and drying (3% maximum for woven and 5% maximum for knitted).
< 3% woven fabric
< 5% knitted fabric
ISO 1421 / EN 13934-1
The material of the exterior layer must withstand tensile resistance.
≥ 450 N (external material)
Sectors where EN ISO 343 is applied
IRON FOUNDRY
COOPER FOUNDRY
ALUMINUM FOUNDRY
ZINC FOUNDRY
GLASS FOUNDRY
CATENARIES
ELECTRIC COMPANIES
OIL PLATFORMS
AUTOMOTIVES
SHIPBUILDING
UTILITIES AND SUBCONTRACTORS
INDUSTRIAL LAUNDRIES
GAS INDUSTRY
WELDING
