PPM | TDS | EC Meters

Bluelab® Guardian Monitor Connect In-Line Bluelab® Guardian Monitor Connect In-Line
$446.85 Save $111.15
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HANNA® GroLine Hydroponic Waterproof pH/EC/TDS/Temperature P... HANNA® GroLine Hydroponic Waterproof pH/EC/TDS/Temperature Portable Meter
$199.00 Save $33.00
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HANNA® GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temper... HANNA® GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester
$159.00 Save $27.00
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HANNA® GroLine Waterproof EC/TDS (ppm) Tester HANNA® GroLine Waterproof EC/TDS (ppm) Tester
$59.00 Save $10.00
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Nutradip® GROWBOSS Nutrient Monitoring System Nutradip® GROWBOSS Nutrient Monitoring System
$224.95 Save $45.00
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HANNA® Combo pH / Conductivity / TDS Tester HANNA® Combo pH / Conductivity / TDS Tester
$159.95 Save $40.00
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Bluelab® Grower's Toolbox, Limited Edition Bluelab® Grower's Toolbox, Limited Edition
$159.50 Save $39.50
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HANNA® GroCheck Combo Meter HANNA® GroCheck Combo Meter
$193.43 Save $48.57
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HM Digital Waterproof EC/TDS/Temp Combo Meter HM Digital Waterproof EC/TDS/Temp Combo Meter
$61.48 Save $15.52
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HM Digital AquaPro TDS Water Tester HM Digital AquaPro TDS Water Tester
$32.20 Save $10.75
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Bluelab® Guardian Monitor Connect Bluelab® Guardian Monitor Connect
$360.00 Save $90.00
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HANNA® DiST® 5 EC / TDS / Temperature Tester HANNA® DiST® 5 EC / TDS / Temperature Tester
$112.65 Save $28.35
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HANNA® pH / EC / TDS Meter with F.S.T. Technology HANNA® pH / EC / TDS Meter with F.S.T. Technology
$234.36 Save $58.64
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Bluelab Truncheon® Nutrient Meter Bluelab Truncheon® Nutrient Meter
$112.00 Save $28.00
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Bluelab Commercial Truncheon® Nutrient Meter Bluelab Commercial Truncheon® Nutrient Meter
$112.00 Save $28.00
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HortiCare Nutrient Check PPM HortiCare Nutrient Check PPM
$68.45 Save $17.50
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HM Digital Handheld TDS Meter with Carrying Case HM Digital Handheld TDS Meter with Carrying Case
$28.38 Save $8.62
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HM Digital Pocket-Size TDS Meter HM Digital Pocket-Size TDS Meter
$21.73 Save $5.27
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Control Wizard 24-7 Nutrient Monitor™ Control Wizard 24-7 Nutrient Monitor™
$173.45 Save $43.50
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Milwaukee T75 Waterproof TDS Tester Milwaukee T75 Waterproof TDS Tester
$71.80 Save $18.15
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Milwaukee Smart pH / EC / TDS Combination Meter Milwaukee Smart pH / EC / TDS Combination Meter
$199.95 Save $50.00
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Control Wizard E.C Dipstick™ Control Wizard E.C Dipstick™
$67.98 Save $19.97
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Bluelab® Guardian Monitor Bluelab® Guardian Monitor
$300.25 Save $63.75
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HANNA® Portable pH / EC / TDS / Temperature Meter with CAL C... HANNA® Portable pH / EC / TDS / Temperature Meter with CAL Check™
$218.35 Save $54.60
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