I calibrate mine before every use using the pinpoint calibration fluid then I put RO/DI water on it to make sure it's zeroed out. By doing this I found out the first refractometer I bought had somehow broke and wouldn't you know it, this thing decided to break when I was putting my fish into hypo treatment (Thank god I was only 1/2 way there). I know a bunch of you have had bad experiences with Drs but when I explained the problem they overnighted me a new one (I went with the more expensive one Vital sine)on their dime and I just picked up the difference in the cost between the two. Like Larry said it only takes 30 seconds if not less. I dry it off with paper towel then wipe it down with warm fresh water, dry it off and store it in it's case with one of those moisture obsorbant packets.
Refractometers
- Thread starter thincat
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