Does anyone use this Hanna PH tester?

We'd need a model number or a picture to say much, but if it can take pH 7 and 10 calibration points, it's likely okay.
 
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pHep 5
(Mfg# HI 98128)pHep 5
(Mfg# HI 98128
 
Thank you -- another person mentioned that the pH 10 solution would be rendered useless due to CO2 exchange after opening. :) The Hanna pH unit I purchased instructed me to save the calibration fluids if I recall correctly. I appreciate the 2nd opinion :)
 
I use an Oakton pHTestr unit that I like, but it's more expensive. This pHep should be fine, if calibrated properly and kept clean.
 
I have that Hanna meter. It works good, but the temp feature takes for freakin' ever to settle on the temp. Its supposed to be very accurate so I use it as a double check for my controller, but it takes several minutes to get a solid reading.
 
I'm not sure what you mean. The single-use pouches of pH 10 solution should be fine if stored properly and used before expiration, assuming the brand is good.
 
I bought the 4, 7& 10 solutions to calibrate it....was that the right thing to do? Also is the calibration a simple process or are there any tricks to share?
 
Calibration with the 7 and 10 solutions should be fine for measuring reefs. Does the meter accept three calibration points? I thought it only took two, but it might take three.
 
The marine depot customer service person told me it would be incredibly accurate if we did all 3 calibrations....so I went with that....maybe someone that has one can tell me if I got sold a bill of goods?
 
It'll be better for testing solutions between 4 and 7 if it's calibrated with those buffers. I wouldn't expect calibration at pH4 to help with testing a tank, well, a tank that's still live, anyway.
 
<a href=showthread.php?s=&postid=11084880#post11084880 target=_blank>Originally posted</a> by vickreyreef
The marine depot customer service person told me it would be incredibly accurate if we did all 3 calibrations....so I went with that....maybe someone that has one can tell me if I got sold a bill of goods?
Click to expand...
The way I understood the directions, it's an either/or kind of thing -- that is you can calibrate it using ph4 and ph7 or ph7 and ph10, but not all three. Maybe it differs model to model. I tried doing both calibrations, but when I sampled it using my aquarium water it only seemed to rely upon the last two-point calibration. E.g., when I calibrated with ph4 and ph7 I got a ridiculous measurement from my SW tank, and vice-versa with my FW tank.
 
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