HM Digital TDS-EZ Water Quality TDS Tester

I bought this to replace one that came with my ZeroWater pitcher several years ago. I wanted the same brand because it worked well for several years and it fit into a slot on the pitcher lid which was convenient for storage. This one works well, is very responsive when you put it in the water but it is bigger than the previous one and doesn't fit in the pitcher lid so now it gets stored in a drawer. There may be others that are smaller and would fit. The one on the pitcher lid may have been a special make for ZeroWater so I gave this 5 stars anyway. Packaging was good and mailing was quick given the hold ups due to the pandemic. It's a good product.

This tester is perfect to test your water quality. It also tests your Reverse Osmosis setup to see if it is still working effectively. The RO membrane is still working OK if the reading is at least 80% lower then raw water going into it. If the number is less than 80% its time to change your RO membrane in the filter.

Easy to use and works well

I love this water tester, Ive only used once since purchasing. I have not used this brand, always had zero water tester. I hope it lasts longer than my zero water tester.

Simple and easy, it tests the TDS and just that. Bought and returned a tester that is $20 and tests 3 things, just too complicated to figure out. This one's great!!

Do you need to check the quality of your drinking water...? Yes you do....!! Easy to use, accurate , confirms TOXINS in all your drinking water... Plus can be used for POOLS, etc... Great Price...

Worked just like it said it would. Compared tap water and our filter water. Filter water was 5 times purer. Nice to know.

The tester worked as expected. I was pleased that it came with the battery and a very nice piece.

It is a good product. I have no complaint.

It is not working as the manual said at begining. Now after one month it olny show zero when test the drinking water. It is ver bad product.