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What is a good ph/EC/TDS meter?


I use and recommend the Hanna HI9813 Grocheck portable ph, ppm and EC meter. It is available from most larger indoor garden supply retailers for around $200. I have had one for several years and it never drifts more than .2 on the ph scale or 30ppm from the original calibration made. I keep the electrode immersed in Hanna storage solution and use a hand held trigger sprayer to clean the film and residue that accumulates on it. I feel this contributes to my consistent readings without any need for re-calibration at all.

Added by ~shabang~:
I've had the lower model waterproof Oakton pens for over 5 years with no problems. I've replaced the pH probe twice since I let it dry out too long, but I did that for piece of mind and not because it really needed it.

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Last update:
2000-11-07 18:32
Author:
MisterIto
Revision:
1.1
Average rating:0 (0 Votes)

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