Welcome to the How to Use a TDS Meter Video Page.

The ZT-2 TDS meter uses highly efficient and advanced microprocessor technology to test for inorganic materials commonly found in drinking water. The HM Digital ZT-2 has an auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries. The HM Digital ZT-2 has a measurement range: 0-999 ppm. 

How to Use a TDS Meter Video Transcript:

Hey everyone, Aquaman here with Water Wisdom sponsored by WaterFilters.NET. Today’s product is the ZT-2 TDS meter. Now TDS stands for total dissolved solids, it’s a measure of the dissolved things in your water, and there are many things dissolved in your water. Water is the universal solvent, they say, and it’s because water typically absorbs microscopic amounts of just about everything it touches.

So if you’re using a reverse osmosis system to remove total dissolved solids, you need to own a TDS meter so that you can test the efficiency of your membrane. So, here’s how this works. This is a little battery operated device, it uses one of those small button batteries like a watch battery, and it has two little metal probes on the end here underneath this cap. What you do is take two glasses of water, one from unfiltered water and one from the reverse osmosis system. Let those sit on the counter and come to room temperature. 

So after they have sat for an hour and they’re at room temperature, you take your TDS meter, and you simply press the button, turn it on, dip it into the water, wait and you get a reading, write that down, and then clean off the probes. Take a little Q tip or a piece of paper towel, wipe them off thoroughly, and then put it in the other glass of water, wait, get a reading, write that down, and now you do some math.

Essentially what you are looking for is 80% removal compared to the incoming unfiltered water. So, for example if you have 100 parts per million on your incoming unfiltered water, your reverse osmosis system should be removing a minimum of 80 ppm of that TDS, so you would get a reading of 20 or lower ideally. If you were to receive a reading above 20, then you are not removing the full 80% and your membrane is exhausted and needs to be replaced. Obviously your incoming number is going to vary. I just picked 100 because it makes for easy math, but you want at least 80% removal of TDS. Owning a TDS meter is a must if you are a reverse osmosis system owner.

There is really no other way for you to scientifically verify if your system is functioning properly. You need a TDS meter to test for that, and here it is, it’s the ZT-2. I’m your host Aquaman and thanks for watching. 

See detailed specifications and purchase the ZT-2 TDS Meter here.