Extech PH100 ExStik pH MeterExtech PH100 Waterproof ExStik pH Meter Waterproof ExStik pH Meter Flat surface electrode design Provides fast and easy on the spot pH measurements Key Features: Flat Surface Electrode measures pH in liquids, semi solids, and solids. No more electrode breakage or clogged junctions. RENEW indicator tells you when its time to replace your electrode which eliminates guesswork CAL alert tells you its time to recalibrate. Ensures accuracy. Memory records
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