pH, EC & TDS
Showing 65–80 of 202 results
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Rapitest Soil Test pH N,P,K
Sale!$17.99$12.87
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Bluelab Guardian Monitor Power Supply
Sale!$29.58$20.75
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Sure Test Commercial Replacement DO Probe (WA ONLY)
Sale!$151.50$28.45
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Sure Test Commercial Multi-Meter w/ pH Conductivity Probes (DO Probe Sold Separately) WA ONLY
Sale!$379.50$71.53
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Bluelab pH Controller – Connect
Sale!$683.40$461.04
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Bluelab Carry Case (meter not included)
Sale!$25.00$16.95
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Microbe Life Hydroponics pH DOWN, 1 qt
Sale!$24.95$17.05
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Microbe Life Hydroponics pH UP, 1 qt
Sale!$24.95$17.05
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Milwaukee Instruments pH 4.01 Calibration Solution, 230 ml
Sale!$11.99$8.12
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Luster Leaf Rapitest Digital 3-Way Analyzer
Sale!$39.99$29.82
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Luster Leaf Rapitest Soil Test Kit
Sale!$17.99$13.41
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HM Digital TDS-3 Handheld TDS meter
Sale!$37.00$20.28
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HM Digital PH-200 Waterproof pH/Temperature Meter
Sale!$99.95$67.77
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FoxFarm Gringo Rasta® pH Down Liquid, 1 gal
Sale!$66.95$46.21
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Bluelab pH Down, 1 gal Bottle, case of 4
Sale!$162.00$109.78
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CYCO pH Up 5 Liter
Sale!$35.32$21.96
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Showing 65–80 of 202 results