• √ WATER QUATLITY TESTER. The tester tests water purity, namely its TDS value ( PPM ). PPM means how many milligrams of solids dissolved in one litre of water, i.e, concentration of all dissolved solids in water. Higher water purity is, smaller PPM is. Notice: it dosen't tell ph value
  • √ EASY OPERATION. Just turn on TDS meter and stir water gently, then stabilized readings will be automatically locked on LCD screen in seconds. And without operation for about 2 minutes, the TDS meter will shut off automatically.
  • √ MULTI USAGES. The water meter tests water purity to confirm it is healthy. To monitor whether various water purifiers or filters work rightly, and whether your tap water is up to your local standard, etc.
  • √ STRICT OUTGOING INSPECTION. Before every tester leaves our factory, We use it to test four different water samples, and then compare their TDS readings to confirm its accuracy. So the tester you receive maybe has a little moisture in its probes and protection cover.
  • √ NOTICES.The meter doesn’t test PH, and doesn’t also analyse water ingredients . It is not a sophisticated laboratory research instrument, but a practical tool of testing water purity for your home. Its average reading error is ±2%-±3%.

I will get my money's worth x10 on this by the end of the summer. Virtually every use it has, I have a need for. Like most others, we are concerned about the safety of our tap water, especially since we do drink it in our coffee, ice maker, etc. I think the latter point is what many forget - they may have water delivered and claim to not drink tap water, but 99% of fridge built-in icemakers are hooked into the waterline, thus you ARE drinking tap water. Anyway, it's been useful for that. We also do a lot of hydroponic growing and it's hard to test the dilution of what we are giving our plants etc. This helps with that. Once the weather gets a little warmer, we'll use this in our pool water daily just for sanity sake. It doesn't test PH though. We do get spring water delivered, but we have an older machine that we aren't sure refrigerates well enough before dispensing. This device tests water temp as well, so we know where we stand with that. Overall, for the price? Or even 5x the price? Yes please - sign me up. It fits many of our needs.

The highest value is tap water, the first is filtered water, and the third is bottled water. I'm in California.

Used to test my Reverse Osmosis System. Reading from RO was 23 and 150 from the tap water used as source for the RO.

My husband and I have very high water quality requirements because we are doctors. Water has a very important impact on our health. So we purchased this water quality pen to test the water quality. It works very well and can quickly detect the results. A great product, I will recommend other friends to buy.

Ease of use and accurate

After receiving the goods, I went to have a try immediately. I tested the fish tank water and tap water respectively. It was very accurate and the measurement time was very fast. I was very satisfied

It is very precise and accurate. I have run the test to compare with my tap water against purified water. I didn't realize how bad my tap water is. Might be I need to change my water softener.

This allows me to know when to change out the filters on our Reverse Osmosis system.

Its perfect for tell you how many part per million is in your water that your testing.It works great and it will save you money in testing your water,if it city water or well water.

Very good products are beyond my expectation. The measurement is very accurate and practical. It's worth buying