potential cation exchange capacity of soil (VBK50)

Potential cation exchange capacity of the soil up to 100 cm profile depth represents the amount of interchangeably bound cations at the sorption complex at a pH of 8.2. The classification is made according to KA5, p. 362, tab. 85.
Classification:
very low < 4 cmol/kg,
low 4 to < 8 cmol/kg,
average 8 to < 12 cmol/kg,
high 12 to < 20 cmol/kg,
very high 20 to < 30 cmol/kg,
extremely high > = 30 cmol/kg.