The Extech PH90 Waterproof pH Meter is designed for reliable and rugged pH measurement in a wide variety of applications, including liquids, semi-solids, and solids. Housed in a waterproof (IP57-rated) casing, it features a flat surface pH electrode that resists clogging and breakage commonly seen with traditional glass bulb electrodes. Whether used in the lab or out in the field, the PH90 provides accurate and efficient testing with user-friendly operation.
The unit supports simultaneous pH and temperature display, offers automatic temperature compensation, and includes a PTS (percent of slope) function to alert users when the electrode needs replacement. Easy to calibrate with 2 or 3 point buffer recognition and enhanced with features like data hold, min/max recording, and auto power off, the PH90 is a practical solution for a wide range of industries.
What's Included:
- 2 - 3V CR-2032 Button Batteries
- 1 - Flat Surface pH Electrode
- 1 - Protective Sensor Cap
Features
Flat Surface Electrode
Rugged and replaceable design allows for quick pH testing on solids, semi-solids, and liquids without the risk of glass breakage.
Dual Display
Shows both pH and temperature simultaneously for comprehensive measurements at a glance.
Auto Calibration Recognition
Supports 2 or 3 point calibration and automatically detects buffer solutions to simplify setup.
PTS Electrode Status Indicator
Percent of slope reading alerts when the electrode needs replacement, keeping results accurate and reliable.
Automatic Temperature Compensation
Ensures accurate pH readings even with fluctuating environmental temperatures.
Smart Features
Includes data hold, min/max readings, auto power off, and low battery indicator for convenience and power efficiency.
Waterproof and Floatable
IP57 waterproof housing floats in water and protects against harsh environmental conditions.
Application Versatility
Ideal for use in agriculture, aquariums, hydroponics, food safety, water treatment, and more.
What's Included
Included with Your Purchase:
- 2 - 3V CR-2032 Button Batteries
- 1 - Flat Surface pH Electrode
- 1 - Protective Sensor Cap
Specifications
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Product Name: Extech PH90 Waterproof pH Meter
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Condition: NEW
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Brand: Extech
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Model Number: PH90
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UPC: 793950150900
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Waterproof Rating: IP57
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Power Supply: 2 - 3V CR-2032 Button Batteries
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Display: Simultaneous pH and Temperature
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Electrode Type: Flat Surface, Replaceable
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Calibration: 2 or 3 point with automatic buffer recognition
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Additional Functions: Data Hold, Min/Max, Auto Power Off, Low Battery Indication
FAQ
Q: Can the PH90 be used in wet environments?
A: Yes, the waterproof IP57-rated housing protects it in wet settings and even allows it to float.
Q: What kind of electrode does it use?
A: It features a flat surface electrode, ideal for testing semi-solid and solid samples as well as liquids.
Q: How do I know when to replace the electrode?
A: The PTS (percent of slope) function notifies you when readings fall outside 70%-130%, indicating it’s time for a replacement.
Q: Are calibration solutions included?
A: No, pH buffer solutions are required for calibration and must be purchased separately.
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