An update: I went over to my bud's house last night and borrowed his meter. It's an Apera 60 that he said he got on Amazon. Not sure I have ever heard of the brand. He is currently on a brewing hiatus because of work so he told me to keep it as long as I need and he gave me the whole case... meter, solutions, little plastic cups for measuring, etc. I also have my Omega meter and I calibrated both of them. I also have the solutions with the Apera meter and new Biopharm 4.0 and 7.0 solutions I just got from Amazon. In addition to that I have 4.5-to-9.0 pH test strips just to see if they help. I calibrated both meters prior to testing them. I grabbed a sample of my tap water right from the faucet. Apera says 7.59, Omega says 6.6 and the test strips looked like 6.0 to 6.25. Not sure what to say about that one. Then I measured the Apera 4.0 solution with the Apera meter. 4.0. Then the Apera 7.0 solution with the Apera. 7.0. Then I measure the Biopharm 4.0 with the Apera. 4.0. Then the Biopharm 7.0 with the Apera. 7.25. :| Then the Apera 4.0 solution with the Omega. 3.85. Then the Apera 7.0 solution with the Omega. 6.69. Omega seems to be reading low. Then the Biopharm 4.0 solution with the Omega. 3.85. Then the Biopharm 7.0 with the Omega. 6.93. Omega seems to be lagging behind. The test strips don't go down to 4.0 so I measured both 7.0 solutions with the strips and they both lined up pretty accurately with the 7.0 squares on the key. I have no issue calibrating the meter prior to every use but I calibrated both here right before the test (the Apera calibration process is different but relatively simple) and the Omega seemed to be out of calibration. Anyone have any thoughts? Anything that looks like I missed something? I might use this other meter for my brew session this weekend and then return it to my bud and pick one up on Amazon if it looks to be working properly. It's currently $79. Also, here is another thing I noticed: The Apera reads much quicker than my Omega. It gets into the range very, very quickly while the Omega takes FFOORREEVVEERR to finally stop. Maybe another sign that it's failing. Cheers.