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seconds with the waterproof  Nutra-Wand-pH Truncheon. Auto-on Truncheon has a pH scale from 2.1- 10.8 and features an easy-to-read illuminated display, one-touch calibration, long-lasting replaceable probe, and Automatic Temperature Compensation (ATC). Reliable Truncheon comes with detailed instructions and a manufacturer's guarantee - three year on meter, one year on probe.
I am the manufacturer of the YM Instrument Co,.Ltd. in China.
With it's easy to read illuminated display, one-touch calibration system, super clear instructions and no buttons to push, measuring pH just got a whole lot simpler.
The flashing lights you love so much; the easiest calibration system ever; reliability only YM products can provide; the longest lasting replaceable probe on the market; auto-on and off just like the Nutra-Wand EC Truncheon; Automatic Temperature Compensation; a scale of 2.1 pH through 10.8 pH and it's available worldwide.
 Dimensions:415mm x 23mm .  Weight:180g.
 Suitable for hydroponics, aquatics, pool and spa, waste water treatment, horticultural and agriculture, wherever an accurate measurement of liquid pH is