Spectrum Technologies Field Scout 2265FS Manual page 5

Because the EC readings are affected by moisture
content, it is important that soil moisture content
does not differ significantly between readings. An
easy way to achieve this condition is by taking meas-
urements approximately 30 to 60 minutes after an
irrigation. This should ensure the soil moisture level
has approximately reached field capacity.
The probe should be inserted in the root zone. The
measurement region is at the tip of the probe. For
turf, the root zone is approximately 2" - 4". For vege-
tables and small plants, this is about 8" - 12". Wait
until the meter reading stabilizes before withdrawing
the probe. Taking several measurements will allow a
representative average to be computed.
Important: Do not touch the sensor tip with your
fingers. The oils on the skin will affect the
probe's measurement accuracy.
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