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GroLine Waterproof Portable pH/EC/TDS/Temperature Meter Kit for Hydroponics
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GroLine 5,000 uS calibration solution, box, certificate of analysis, 120 ml
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GroLine 1,413 uS calibration solution, box, certificate of analysis, 120 ml
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GroLine pH 7 buffer (+/- 0.02 pH accuracy), 120 ml, box, certificate of analysis
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