GroLine Hydroponic Waterproof pH/EC/TDS/Temperature Portable Meter

This is the easiest meter I've used yet. I also have the groline version below this which is the stick kind ($209 model) and this is worth the extra money so far because you dont have to stick your head in the reservoir to try and see the reading. This one also has a bright backlit display unlike the other model and seems to hold calibration longer.

Tried just about every brand meter and have been using this one for 4 years now. Make sure to stay up on cleaning it, calibrate it at least once a month, and keep it in storage solution.

Works decent but after a while stops work, usually after the return deadline lol..

High quality.....reliable!!! I recommend it!🤙

This is another super quality ph meter from Hanna, who in my opinion has the best, better than Any I’ve tried in 30 years. I’ve had one of their meters for almost 25 years. The one feature they neglected and the only reason for not getting 5stars is NO BACKLIT DISPLAY!!! Some reviews say it does, but without doubt the 9814 does not and that’s sad for a quality piece like this

I really feel like I was scammed. I am a hydroponic grower so i need a good instruments. I have and use Hanna instruments, but I was looking for others more complete "and all in one" so I don't have to carry 2 or 3 instruments with me. I thought that this was a great option (I still do, but the seller is HORRIBLE) and having already purchased Hanna instruments in the past, the price is right, expensive but right.FIRST PROBLEM, BOX WAS NOT SEALED: When I receive the package, I noticed that the box of the product was not sealed, it quite unusual knowing the quality and delicacy of Hanna.SECOND PROBLEM EXTRA USED PROBE: When I was unboxing my product i saw the probe and man, it was SHOCKING!! You can see on the pictures, this was preowned, and really really used by the other owner. For one moment I doubt making this review but, 298$ for something used, I really feel scammed, I mean the probe came with the storage solution in the electrode, no ph ec meter (the new ones) come with that, they come fully dry to guarantee that the electrodes never had contact eith another liquid. So I will have to use this instrument feeling scammed, but I hope no one have tu deal with this experiencie. It is too expensive to have this used. BE CAREFUL! I strongly recommend Hanna instruments, go ahead and buy it but, NEVER TRUST THIS SELLER!!

I wish it would have been a little less pricey around $200. I like the only one probe concept.

So nice I got it twice. Would get a third if needed or if one ever dies. I've replaced the probe a few times on the older gen version, it's gotten a little pricey so I just got a new pen.