HM Digital pH Meter pH-80 Hydrotester LCD Display With Auto Calibration & Temperature Display

Durable, accurate n genuine

I bought this PH Meter in June 2024. I went for the more expensive one due to bad experiences with the cheaper ones. Immediately I noticed that the meter required almost daily calibration. I waited several days before jumping to conclusions. I purchased multiple buffer solutions at my own expense to test and verify results. All inconsistent. Finally I contacted HM support and sent them photos and videos of evidence that readings were faulty. They made me ship the meter back to them at my own expense. After 2 weeks they claimed that they calibrated and tested the device and it was working fine, they could find no issues, and they sent it back to me. As soon as I opened the box I tested again using buffers and the results are way off again! See pictures. Fresh from their factory calibration. I have tried every way to cooperate with them. I have even asked them to send me their own buffers if they are so adamant the device works fine. I have sent photos and videos of evidence. And yet the still refuse to acknowledge the device if faulty. If they had been a little more transparent and helpful this could have been easily resolved. But considering their stubborn refusal to accept the facts or provide their own, I must warn anyone from buying any HM products with a 1-Star rating. Aside from the cost of the meter, all the buffers have also drained my wallet. Terribly disappointed and frustrated.

Good

The first one I bought stopped working after 4 months. So I bought for the second time. And this time the product came without any buffer solution. And most noticeably, the battery was completely drained. It wouldn't turn ON. I changed the battery and it was working.

Showed good result, almost accurate but needed to be recalibrated everytime I wanted to use it, gave different readings after few hours of rest so returning

Very good product. Easy to use.

I would recommend HM PH meter ph-80. Easy calibration method. Nice look and handy. I'm satisfied with this item.

Not working properly.Error reading

I had a couple of the cheaper models of PH meters to use with my Medical Cannabis watering/fertilizing and found them to be relatively inaccurate and always in need of recalibration. This new one is the Bomb - easy and reliable. Medical Cannabis is an expensive crop to lose because of faulty equipment and I trust this meter.

Très bonne qualité et réglage rapide et précis !

I also own the far more precise, and more expensive meter by the same company. It has a replaceable probe that costs almost as much as this entire meter. It was nice to have that precision, of course, but I found that I was rounding off anyway, so I really didn't need it. By that time, i was used to the time it took for that very precise meter to settle into a final reading. When I first began using this meter, it seemed that the meter settled into the final reading almost immediately. Perhaps I've gotten spoiled, or maybe it happens as the meter gets older, but it now seems to take a little longer for the meter to settle in. It still only takes a few seconds, and I rarely wait even a full minute to take a final reading. I calibrate on a regular basis, once every week or two. Sometimes, I find that the meter has barely changed in calibration, and I don't need to do anything. Other times, after longer waits between calibrations, I have found a drift of 0.1 to 0.3, which isn't that much at all for my purposes. Luckily, calibration is simple and easy, and all you need is a source of the calibrating liquid and a small cup. I've abandoned the use of my more precise meter, and instead of buying replacement probes, I just buy another one of these meters every few years. All meters wear out eventually, since it is in the nature of the little glass bulb to slowly erode (which is why you need to recalibrate). In my situation, it makes more sense to get another one of these fine meters with a rapid response time, instead of buying a new probe for the more precise meter with the slower response time. They are all excellent meters, highly reliable, but I have ultimately settled on less precision and a more rapid response.

+ mit der Anleitung war die Inbetriebnahme sehr einfach, man sollte nur nicht übersehen, dass man VOR dem ersten Gebrauch die Storageflüssigkeit auffüllen (Schwamm) und 15min warten muss. + Kalibrierung ist vor der ersten Inbetriebnahme NICHT notwendig, wir haben diese aber trotzdem durchgeführt-> war sehr einfach und ging schnell. Für die Kalibrierung braucht man, zusätzlich zur beigelegten Lösung, destilliertes Wasser. (die Messspitze sollte auch nach jedem Gebrauch mit dem dest. Wasser gespült werden) + toll ist noch, dass das Messergebnis automatisch an die Temperatur angepasst wird. Sowie bei wsl. jedem PH Messgerät muss man unbedingt darauf achten, dass immer genug Storageflüssigkeit im Schwamm ist und die Spitze nicht austrocknet. - Perfekt wäre noch eine kleine Box/ein Koffer zur Aufbewahrung gewesen. Dahingehend ist leider nichts dabei. -> Trotzdem 5 Sterne.

muy buena compra su funcionamiento es exelente ya que lo necesitaba rapido y tambien me resulto un producto exelente para su uso