I owned a Hanna for several years and always had issues with the cap NOT sealing; the meter would grow that white crystal around the edge. As a result, I had to regularly open it just to replenish the storage solution. Then, I went to replace the probe for the second time and Hanna wanted $50 for the probe (okay) and another $10+ to ship it using FedEx. I asked why they couldn’t use a more reasonable carrier — like USPS — and was told “their contract was with FedEx”. They could have saved me a couple bucks, but refused. I told them to stick their meters….
So, I bought a pH meter from ExTech. It was much cheaper than the Hanna, it’s reliable, accurate, came with a stand to store the meter and the cap seals very well. The best part is the replacement probe is sold on Amazon and ships for free with Prime for the same cost as the Hanna replacement probe.
Hanna, imho, seems to be to wrapped up in their own success to care about their customers.