DD ENV 343:1998

Contents
National Foreword
Foreword
Introduction
1. Scope
2. Normative references
3. Definitions
    3.1 Foul weather
    3.2 Water vapour resistance
    3.3 Thermal resistance (insulation)
    3.4 Water penetration resistance wp (Pa)
    3.5 Outer shell material
    3.6 Liner
    3.7 Thermal liner
    3.8 Thermal lining
    3.9 Lining
4. Performance requirements
    4.1 Resistance to water penetration
    4.2 Water vapour resistance
    4.3 Thermal resistance of the separable thermal lining
    4.4 Tensile strength of the outer shell material
    4.5 Tear resistance of the outershell material
    4.6 Dimensional change of the protective clothing
    4.7 Seam strength of the outer shell material
    4.8 Style of the protective clothing
5. Testing requirements
    5.1 Testing of resistance to water penetration
    5.2 Testing of water vapour resistance Ret
    5.3 Testing of thermal resistance, Rct
    5.4 Testing of tensile strength
    5.5 Testing of tear resistance
    5.6 Testing of dimensional change
    5.7 Testing of seam strength
6. Marking and care labelling
7. Sizes
8. Information supplied by the manufacturer
Annex A (informative) Recommendations for wearing time
Annex B (informative) Test device for one-sided exposure
to fuel and oil
Annex C (informative) Glass paper or glass cloth
Annex D (informative) Examples of textile laminates or
thermal liners
Annex ZA (informative) Clauses of this European Prestandard
addressing essential requirements or other provisions of EU
Directives

Gives requirements and test methods that apply to materials and seams of protective clothing against foul weather. for the interest of manufacturer's, test institutes and end-users. The measured properties and their classification are meant to ensure an adequate protection level. The essential properties are water proofness and water vapour resistance and are to be tested and marked on the label. The most important property is water proofness and is measured on material of the outer garment layer. The test is made on pretreated and new fabric samples and also on parts with seams.