Review on Accurate Temperature Spurtar for Aquariums with 0-9999ppm by Anthony Grover
They work fine. for pH testing
For the price they work well. The TDS meter was great but the PH meter was insane. A little trick for the PH meter is to disconnect the battery power to drain the current, then put the battery back in and calibrate the meter. After calibrating and testing, they work fine. Just what I needed to get the job done.
- pH meter
- Doubtful purchase for the elderly
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