How convert between umhos/cm and mmhos/cm
1000 umhos/cm = 1 mmhos/cm
To use the table below, convert your units to mmhos/cm by dividing your reported result by 1000.
Interpreting EC data from soil extracts (1:2 soil-to-water ratio).
||Plants may be starved of nutrients.
||If soil lacks organic matter.
Satisfactory if soil is high in organic matter
||Okay range for established plants.
||Okay for most established plants.
Too high for seedlings or cuttings.
||Plants usually stunted or chlorotic.
||Plants severely dwarfed; seedlings and rooted cuttings frequently killed.