Lab-Grade Instruments Designed Specifically For Growers
Lab-Grade Instruments Designed Specifically For Growers
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Probe Cleaning
4.1
Power on and remove the probe cap.
4.2
Rinse the probe with clean water and shake off excess water.
4.3
Submerge the probe into the solution, make a quick stir to remove
potential air bubbles around the sensor. Hold still and wait for the
reading to stabilize ( stays on the screen), then record the reading.
4.4
Short press to switch from EC→500ppm→700ppm
4.5
Thoroughly rinse off the probe with clean water.
UNITS
MODE
What is EC and its relation to 500ppm & 700ppm?
EC (electrical conductivity) is a measure of the nutrients in the solution. Low conductivity implies a low
nutrient concentration, which usually results in nutritional deficiencies and slow growth rates of your
plants.
A higher conductivity is more food for your plants. However, be careful of very high levels as delicate plants,
cuttings, and seedlings can experience fertilizer burn if the conductivity is excessively high.
EC, 500ppm, and 700ppm are simply different units preferred by different markets. 500ppm and 700ppm
both originate from EC. Therefore, using EC to compare and analyze test result is the safest way and will
minimize confusion. Here is how they convert to each other:
1.0 (EC) = 500ppm (500ppm) = 700ppm (700ppm)
2.6 (EC) = 1300ppm (500ppm) = 1820ppm (700ppm)
3.5 (EC) = 1750ppm (500ppm) = 2450ppm (700ppm)
5.1
If necessary, you can manually hold (lock)
the reading by short pressing . Press
it again to cancel the hold.
5.3
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 measure
mentmode automatically.
5.2
Long press to switch temp. unit
between °F and °C.
UNITS
MODE
EC/500ppm/700ppm Measurement
Other Functions
or
6.1
The tester is only as accurate as the probe is clean. Always thoroughly rinse off the probe before and after each
measurement with clean water in a container or with a wash bottle.
6.2
For tough contaminants, soak the probe in Apera’s cleaning solution or detergent water for 30 minutes. Then
use a soft brush to remove the contaminants. Afterwards, rinse it off, then re-calibrate the tester before using
again. These cleaning tools can be found in Apera's Probe Care Kit (see Section 13).
7.1
Under regular usage (daily or weekly use), as long as there are some
water droplets in the probe cap, you are good to go.
7.2
For long-term storage (you are not going to use the product for a while),
add clean water to the Fill line in the cap and store the probe in it. Close
on the probe cap tightly.
Probe Storage
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