Soil improvers and growing media. Determination of pH has-tracked-changes surface preparations

surface preparations

distribution systems

BS EN 4342 is an international standard used for the Aerospace series

This part of BS 3900 supersedes BS 3900-0:1989+A1:1992

particularly where those requirements are complex or involve multiple sectors or fields of application

Soil improvers and growing media. Determination of pH has-tracked-changes surface preparations1 Scope This European Standard specifies an instrumental method for the routine determination of pH in a suspension of soil improvers or growing media. This method is not applicable to liming materials and preformed materials such as mineral wool slabs and foam slabs. NOTE The requirements of the standard may differ from the national legal requirements for the declaration of the products concerned.