NEN EN ISO 11721-1 : 2001

Foreword
Introduction
1 Scope
2 Normative references
3 Safety precautions
4 Principle
5 Apparatus and reagents
6 Test specimens
  6.1 Preparation
  6.2 Number of specimens
7 Leaching procedure
8 Assessment of the level of microbial
    activity of the soil
9 Procedure
10 Calculation and expression of
    results
11 Test report
Annex A (normative) Determination of water
        holding capacity and water content
        of the test soil
        A.1 Determination of the water content
        A.2 Correction of the water content
          from a lower to a higher value
        A.3 Determination of water holding
          capacity
Annex ZA (normative) Normative references to
         international publications with
         their relevant European publications

This Standard defines a method for determination of the resistance of chemically-pretreated textiles to the action of microorganisms present in soil in comparison with untreated textiles. This method applies to flat textiles made of cellulosic-containing yarns (tentage, tarpaulins, webbing and tapes) that will typically come into contact with soil during use.