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PORTABLE DEIONIZED WATER SYSTEM
TDS MEASUREMENT USER GUIDE
TDS Meter (included inside the package)
Treatment capacity and cartridge life highly depend on feed water quality, especially hardness. Hardness measured
as TDS, will determine the amount of deionized water your ZeroSpot system can produce.
Please visit
www.globalwatersolutions.com/products/zerospot/
and refer to the Treatment Capacity Table for guidance.
The Treatment Capacity Table can be used to determine the approximate amount of treated water that your ZeroSpot
system will produce when supplied with feed water with a given TDS level measured in ppm.
Before using your ZeroSpot, it is advisable to use the supplied TDS meter to first measure the feed water TDS and use
the Treatment Capacity Table to determine the estimated volume of deionized water number and number of rinses the
system can produce. Once this number is determined, we suggest measuring the TDS of the treated water semi-fre-
quently and more frequently as the estimated number of rinses is approached.
It is necessary to reorder replacement cartridge once the TDS reading exceeds 10 ppm. A TDS reading above 20 ppm
indicates that the cartridges are exhausted and should be replaced.
How to measure feed water TDS:
1. Fill a cup with feed water collected from spigot or tap.
2. Push the blue button to turn on the TDS meter (See Fig. 1.1).
3. Remove TDS meter cap (See Fig. 1.2).
4. Submerge sensor tip in water. Water level should cover sensor tip.
5. Wait 10 seconds for measurement to stabilize (See Fig. 1.3).
6. Record TDS measure shown in ppm.
How to measure treated water TDS:
1. Fill a cup with feed water collected from ZeroSpot.
2. Push the blue button to turn on the TDS meter (See Fig. 1.1).
3. Remove TDS meter cap (See Fig. 1.2).
4. Submerge sensor tip in water. Water level should cover sensor tip.
5. Wait 10 seconds for measurement to stabilize (See Fig. 1.3).
6. Record TDS measure shown in ppm.
TDS Measurement
Fig. 1.3
- Submerge TDS meter sensor tip in
water and wait 10 seconds for measurement
to stabilize.
Fig. 1.1
- Push the blue button to turn-on the TDS meter
Fig. 1.2
- Remove the cap
