pH, EC & TDS
Showing 1–16 of 201 results
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GH pH Down Liquid Gallon
Sale!$29.24$16.88
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GH pH Up Liquid Gallon
Sale!$29.24$16.88
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HM Digital PH-80 pH/Temperature Meter
Sale!$46.50$31.55
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Bluelab Replacement pH Probe
Sale!$75.00$51.12
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HM Digital Replacement pH Sensor Probe for HM-500
Sale!$59.99$40.67
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Active Air 2-Way Moisture/pH Meter
Sale!$10.91$6.17
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Bluelab pH Pen
Sale!$116.00$80.23
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Bluelab Inline pH Probe (Replacement Probe Guardian Monitor Connect In-Line)
Sale!$189.72$129.46
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HM Digital Handheld TDS-3 Tester
Sale!$28.51$16.08
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HM Digital 1000 ppm TDS Calibration Solution, 3 oz (90 ml)
Sale!$6.50$5.29
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GH pH 7.01 Calibration Solution Quart
Sale!$23.84$13.79
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GH pH 4.01 Calibration Solution Quart
Sale!$23.84$13.79
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Bluelab pH Controller
Sale!$606.00$410.19
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GH pH Down Liquid Quart
Sale!$11.73$6.77
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Bluelab Soil pH Pen
Sale!$191.00$128.13
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Bluelab Guardian Monitor Connect
Sale!$450.00$305.10
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Showing 1–16 of 201 results