Digital Calcium Meter
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New “Professional Grade” Meter,Measure calcium in nutrient solutions, water samples, and tissue sap, Waterproof pocket-sized meter with digital calibration, Sensors store dry and are field replaceable,Unique flat sensor allows you to conveniently and accurately measure samples as small as 0.3 mL, Includes two CR2032 batteries, case and calibration standards,Measurement Principle: Ion electrode method.
Soil pH Meter
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Soil pH Meter, Humidity Temperature Controller, Altimeter
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