Hofun PH Meter & TDS Meter Combo, Upgraded Backlight PH TDS EC & Temperature 4-in-1 Water Quality Tester, High Accuracy Digital Water Tester for Household Drinking, Pool and Aquarium

Well been using for several months and so far no problems. Calibration was little tricky just had to keep trying until I got it to calibrate like it should. I use it about every other day and check calibration about every couple weeks and so far I haven’t had to recalibrate. Very important to rinse probe after use in some distilled water then I shake the water off and blow on it to dry before I put cap on it. Seems to be accurate enough for my needs when checking it to see if it’s still calibrated it’s within a few 10th and has stayed that way. Super easy to use would like it if the light on the display stayed on longer but turn it off then back on solves that. The tds meter also seems to work very well I check it with reverse osmosis water from a 6 stage filter system and so far it works like it’s supposed to. 5 stars all around recommend for anyone needing a ph/tds meter..

I think if this kit were to be better, it would include a 250 ml measuring cup to calibrate the ph tester and possibly have a recalibration kit for more than one shot (like link to the ph packs or a large vessel and a measurement per 250 ml so you can recalibrate multiple times easily).The temperature and ppm testing was spot-on and easy to use right out of the gate. I think my device looked pretty darn calibrated prior to being calibrated, so even though it says it needs to be calibrated, you may test it in a few solutions you know the ph level of and find it's within .15 ph of reality already. Not bad.Again, I think they should make a calibration kit and add-on as an option to group with this to get more value out of the ph tester, which was my primary focus.

I recently started keeping discus for the first time, and knowing how difficult they can be to keep healthy, I knew I would probably have to pay more attention than usual to the ph in my aquarium. I elected to give this product a try because it was reasonably priced and had gotten good reviews. So far, I have not been disappointed. The meter give off accurate readings and are extremely easy to use. This product is more convenient than a lot of standard ph kits, which require addition of chemicals into tiny test tubes and subsequent matching to color charts. This product is efficient and gets the job done.

I've used this same model PH meter in the last, but this one seems to have a loose connection as the numbers jump around wildly if I don't hold it exactly right. I am able to use it though so no real need to complain. The TDS meter works exactly as expected.

Good for making my hot sauce

I got this item to test PH levels for my freshwater aquarium. Numbers are not 100% accurate, but it gets job done for me without making a trip for water testing.

Took a while to set up but it seems to do the job. I get consistent readings but I have nothing but the base I made to test it against. I saved the solutions and plan on recalibrating once in a while.

I mainly purchased this set to measure ph for kombucha. However, the other TDS meter, besides measuring TDS (weight of total dissolved solid of water) and conductivity it also measures temperature. Both meters are useful to me. They came with batteries inside and are ready to use right out of the box. Screens are illuminated and very easy to read. I am very happy with my purchase.