Features of the TPI 397 Accurate pH Tester Pen

• Waterproof design protects the meter
• Low power consumption extends battery life
• Auto-off function turns power off automatically after 10 minutes
• Automatic Temperature Compensation (ATC) for accurate readings
• Replaceable Glass Test Tip Electrode that screws on for a solid connection (pH-902A Changeable electrode / pH-901A Fixed electrode )

Model 397 Applications

• Boiler water testing for proper pH level to avoid internal material degradation
• Check automotive radiators to avoid acid level build up resulting from dissimilar metals
• Onsite water testing for wells and septic systems; saving lad testing time
• Quickly and easily test aquariums, spas and swimming pools for proper pH levels

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