6
6
Making a Soil Slurry
6.1
Remove about 2 inches (5
cm) of the top layer soil and collect different locations’ soil
samples at approximately 6 inches (15 cm) deep.
6.2
Thoroughly mix all collected soil.
6.3
Ideally, dry the soil in the air or bake in an oven at 104
˚F / 40 ˚C.
6.4
Weigh out 20 g of the mixed soil sample into a glass jar and add 100 g of distilled or
deionized water in it.
6.5
Shake well for 5 minutes or use a magnetic stirrer to automatically stir for 15 minutes.
Leave overnight.
6.6
Shake or stir again next morning, then allow it to settle for 15-30 minutes.
6.7
Power on the tester; Remove the probe cap; Rinse the probe in the water bucket and
shake dry.
6.8
Submerge the probe into the soil solution, shake for a few seconds, and wait for the
reading to fully stabilize. Then record the reading.
6.9
After measurement, put the probe back in the storage cap and soak in the 3M KCl
solution.
7
Other Functions
7.1
If necessary, you can manually hold (lock) the reading by short pressing
. Press it
again to cancel the hold.
7.2
Long press
to switch temp. unit between °F and °C.
7.3
Out of range reminder for pH
Out of range reminder for temperature
7.4
The tester will automatically power off if there is no operation within
10 minutes. If you want to turn off the Auto. Power Off function,
power off the tester, and then hold
for 5 seconds until you see
Auto off. Then it will power on and go to measurement mode
automatically.