Folks, if you've recently upgraded or renewed your annual club membership but it's still not active, please reach out to the BOD or a moderator. The PayPal system has a slight bug which it doesn't allow it to activate the account on it's own.
For the tds meter though I only know of bought calibration fluid. If you on good terms with your lfs. They might hook you up and check it if you bring it to them.
about a month back, i got mine calibrated with a solution from Renee. (a trusted source...)
one calibrate from Renee can goes a very long ways...
i can bring mine to the meeting in Edison, if you are coming...
we can use Ralph's water to test, whatever the reading on mine, you adjust yours as the same...
;D
If someone reminds me the day before the meeting, I can bring some 53 MS calibration fluid for the Refractometers. Just bring the Refractometers and we will calibrate right there.