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HALO Wireless pH Meter for Direct Soil Measurement with Bluetooth®- HI12922
PH-1 Turns iPhone, iPod, or iPad into Portable pH Meter Envirotech Online
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pH Meter | Hanna Instruments
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This pH accessory turns an iPhone into an ipHone – LabHomepage
pH-Meter on the App Store
New Bluetooth APP Smart PH Meter Water Quality Tester Pen For Soil Food YY-1030 | eBay
Smart Soil PH Meter 0.0~14.0pH Bluetooth Soil Data Logger Temp Acidity Analyzer | eBay
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HALO Bluetooth Digital pH Meter - HI12302 | Hanna Instruments
RCYAGO Bluetooth pH Meter, 0.01 Resolution High Accuracy pH Tester with Backlit LCD Display and ATC for Food and Solid Sampling pH Measurement: Amazon.com: Industrial & Scientific
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