Hanna TDS Meter Instructions From Purewater 4U

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Hanna TDS Meter Instructions

Home Test Kits

Hanna Primo
TDS Meter with Automatic Temperature Compensation

Simple and easy to use.
1. Test the water from your reverse osmosis system.
2. Test your tap water.
3. Subtract the RO Reading from the Tap Reading and divide by the Tap Reading.

Tap Water TDS - RO Water TDS
Tap Water TDS

You want to replace the RO Membrane if the efficiency is less than 80%.

Reverse Osmosis Membranes have an average life of 2-4 years. I have seen some last as long as 6 years. How do you know if it's time to replace the RO Membrane?

With the Hanna Primo TDS Meter you can always check the quality of your reverse osmosis water quickly and conveniently.

Some of the features:
RANGE: 0-1999 ppm. Battery life of 200 hours of continous use and an auto shut-off feature will shut the meter off after 5 minutes of non use preserving the battery life.


Quantity:		$29.80

Example 1 1. RO System water = 25.
2. Tap water = 200.
3. 200 - 25=175
175 divided by 200=.875.
Membrane OK

Example 2 1. RO System water = 125.
2. Tap water = 200.
3. 200 - 125=75
75 divided by 200=.375
Time to replace RO Membrane.

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