calibration solutionBluelab pH 4.0 and 7.0 Calibration Solution Kit (500 ml each)β
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4.8~$29Buy Now on AmazonSee full details
About this product
The instrument favored by many commercial hydroponic operations β includes calibration solution and storage solution in the box.
Often bought with this
ec meterBluelab Truncheon Nutrient Meter (EC/TDS/CF)β
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4.7~$99Buy Now on AmazonSee full details
ph adjusterGeneral Hydroponics pH Control Kit (pH Up, pH Down, Test Indicator)β
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4.7~$22Buy Now on AmazonSee full details
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