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The Extech® EXSTIK II® waterproof meter has a rugged combination, flat-surface pH electrode (with auto-ranging), high-accuracy conductivity cell. Adjustable conductivity to TDS ratio from .4 to 1.0 and .5 fixed salinity ratio. The internal memory stores up to 25 labeled readings for recall. Measures 1.5" W x 7" L. One-year warranty on meter, six months on sensor.
- RENEW feature alerts user when the electrode needs replacing
- Has ATC, auto shut-off and low battery indication
- Due to its salinity range, this meter is not compatible with salt water
