pH/EC/TDS - General Hydroponics


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GH pH Calibration 4.01 Solution, qt

SRP $21.50
SKU: GPCSF532
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GH TDS Calibration Solution, 1500 ppm, qt

SRP $21.50
SKU: TCS532
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GH TDS Calibration Solution, 1500 ppm, 8 oz

SRP $8.50
SKU: TCS508
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