National foreword<br>National Annex NA (informative) - Bibliography<br>Foreword<br>Introduction<br>1 Scope<br>2 Normative references<br>3 Terms and definitions<br>4 Principle<br>5 Reagents and material<br>6 Apparatus<br>7 Procedure<br>8 Calculation and expression of results<br>9 Validity of the test<br>10 Statistical analysis<br>11 Test report<br>Annex A (informative) - Techniques for rearing<br> and breeding of Collembola<br>Annex B (informative) - Determination of<br> water-holding capacity<br>Annex C (informative) - Guidance on<br> adjustment of pH of artificial soil<br>Annex D (informative) - Extraction and<br> counting of Collembola<br>Bibliography