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With the Voltcraft PH 100 ATC you can check pH in a variety of fluids quickly and reliably. Accuracy (pH) 0.7. Spare electrodes are also available 55-2341. Temperature Range 0 to 50°C.
I bought this pH meter for testing aquaria water and for use in my environmental study interests. It is well designed, compact, easy to use with a large clear LCD display, is eminently portable with an epoxy bodied pH electrode for robustness and is powered by a PP3 (9 volt) battery.