US 
CAN - en Extech PH90
Waterproof pH Meter
Order #: PH90
Mfg #: PH90
Extech PH90
Waterproof pH Meter
Order #: PH90
Mfg #: PH90
$98.99
Availability: Ships in 3-4 weeks
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Product Highlights
- Rugged replaceable flat surface pH electrode for quick on-the-spot pH measurements
- Simultaneous display of pH and Temperature
- 2 or 3 point calibration automatically recognizes buffer solutions (order pH buffers separately)
- PTS (percent of slope) tells you when it's time to replace your electrode (below 70% or above 130%)
- Automatic Temperature Compensation
- Data Hold, Min/Max, Auto Power Off, and low battery indication
- Waterproof design (IP57) floats in water and protects the meter in wet environment
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