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Apera Instruments AI311 Premium Series PH60 Waterproof pH Pocket Tester Kit, Replaceable Probe, 0.01 pH Accuracy, Lcd display Regular Glass Bulb Sensor - Walmart.com
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Apera Instruments PH60-WW Handheld pH Meter Tester Kit with LabSen 335 ATC pH Electrode for Lab-Grade pH Measurement in Wastewater, Suspensions, and Emulsions: Amazon.com: Industrial & Scientific
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PH8500-PW Portable pH Meter/Tester for Purified Water (Drinking/RO/Distilled/Deionized Water), Equipped with LabSen 803 Electrode- Apera Instruments
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Apera SX811-BS Portable Meat pH Meter, Equipped with LanSen Food-Grade Stainless Steel Anti-Contamination Blade Electrode
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APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, 0.1 pH Accuracy Regular Kit - Walmart.com
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Apera Instruments AI502 EC700 Benchtop Lab Conductivity/Temperature Meter, Plastic, 1% F.S Accuracy, 0-200.0 mS/cm Range, 1-4 Points Auto Calibration: Amazon.com: Industrial & Scientific
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APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, 0.1 pH Accuracy Regular Kit - Walmart.com
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