The standard applies to all types of soil. When determining, it is important that the soil sample is homogeneous. The method cannot be used with inhomogeneous soil samples. The standard is intended to be applied in determining the influence of chemical substances on the urease activity of soil. For an explanation of the use of the standard in such research, see the appendix.
NEN 5796-1989 history
1989NEN 5796-1989 Soil - Determination of urease activity