HMD PH-200 Digital Professional Waterproof 0-14 PH & Temperature Meter

Good working from 3 months

Perfect

Second hand fool brock,dont buy

1.) Ultra fast shipping-------A+ 2.) Great customer service, I had to call Hydrofarm because the sensor was dry when I received it. Their response was that the meter will be fine if kept hydrated after first use.------------------A+ 3.) Calibrating with buffer solution is as easy as pie! The instructions clearly indicate how to do this. Follow them closely!-------A+ 4.) The reading will vary a little while you are taking a measurement, but that is perfectly normal. I use this for brewing, and upon having an exact reading of where our PH is has improved the taste of our beer. There is another reviewer that said commonsense is essential when using this tool, I couldn't agree more!! Keep sensor moist at all times, and store in upright position. Use buffer solutions to calibrate often........simple.

جودة التصنيع ممتازه لكن وصلني وهو لا يعمل وقمت بارجاعه

Ras tout est ok juste faire attention le liquide a couler mais l'éponge encore humide

I assume that most of the folks who have broken this quality probe or complained about how fragile it is have never used a quality/accurate PH meter before. The nature of the beast requires that the sensor be made the way this one is, and also that it remain wet with a storage solution at ALL TIMES! There is no gray area here folks! If you fail to rinse the end of the probe off with a spray bottle of distilled water after each use and then store it in the special reservoir cap with the sponge to hold the storage fluid up against the glass/gel sensor, YOU ARE ASKING FOR TROUBLE! The original unit I bought (Not from Amazon) arrived dry as a bone with the storage solution evaporated. I returned it for a refund and purchased the meter from another dealer who took better care of his stock. If your meter arrives dried out, I would suggest doing the same thing. Although the sensor can sometimes be rehydrated, I would be dubious as to the accuracy and prefer to get a replacement that was stored properly and/or didn't sit on a dealer's shelf for an eternity. In terms of the fragility of the glass sensor itself... The sensor end of the probe has a three sided housing that is designed to extend out beyond the actual glass sensor bead and shield it from impact from the sides, but obviously, if you manhandle the thing like a Gorilla and carelessly dunk it into a glass beaker or other container, there is a good chance that you are going to bring the sensor bead straight down onto the rim of the container or something and crack or shatter the sensor! DUH!! This thing is definitely not IDIOT PROOF, so idiots should probably look for something else or have someone with better hand/eye coordination do their testing for them! I purchased my original PH-200 well over two years ago and use it several times a day in my hydroponic garden. NEVER broke a sensor, never had one dry out, never had a problem with calibration, never had a problem with the device in any way! I like this brand and this model so much, I just bought another one here on Amazon because my original is getting close to needing a sensor replacement, and I had a gift card here and figured it would make sense to just buy an entire new unit for now and a new sensor for the original later! The auto calibration is GREAT! Buy yourself some calibration reference solution of 4.0 and 7.0 PH and READ THE INSTRUCTIONS ON THE LABEL ON HOW TO CALIBRATE the device. Unlike other meters in this general price range, there is no calibration screw to turn, no hassles at all! Just hold the CALIBRATE button down while the probe is immersed in the "quality" reference solution of your choice, and wait till the display reads "END". Takes about 5 seconds from start to finish after letting the sensor sit in the reference solution for a FULL MINUTE before hitting the button! DON'T DO WHAT MOST OF THE 1 AND 2 STAR REVIEWERS HERE DID AND CONTAMINATE THE CALIBRATION REFERENCE SOLUTION, AND THEN WHINE ABOUT THE UNIT FAILING TO CALIBRATE PROPERLY! Some lab guys calibrate before every test, and with this model, it is so easy to do, it really can be done in less than 5 seconds by pushing a button and waiting for the probe to self calibrate to the solution it is sitting in. It uses its PH measuring ability to identify the PH of the base solution you are using and calibrate accordingly. (7.0 or 4.0) In terms of accuracy... Like one of the other owners said... This thing is almost as accurate as the $1500.00+ lab grade PH meters, which is definitely saying something! So... Like anything, the device is only as good as the person using it and most of the low review scores are testament to how NOT TO USE THIS DEVICE! If you treat your equipment like crap and don't like reading owners manuals then this probe is probably not for you. If on the other hand, you are looking for an excellent WATER PROOF probe made by a company well respected in the laboratory equipment industry, a model that is considered by those who should know to be one of the best PH probes you can buy, then look no further than the PH-200. And when your unit arrives... READ the manual, and use some COMMON SENSE in handling it and it should give you years of trouble free service! I would give this thing 10 stars if I could, it is that good!

There's not much to say. So far it seems to work exactly as it should. It stabilises nicely to get a read. Some others fluctuate a lot, and that makes them hard to get a reading,but not this one. So far so good