BLUELAB best sellers

#1 pH Pen Meter and Probe Bluelab pH Pen Meter and Probe Care Kit pH with Calibration Supplies, Storage Solution & Brush, Reliable Digital Tester for pH, Temperature in Soil and Solutions, Optimal Plant Health and Yield

$109.99 on Amazon

#2 pH Pen Digital pH Tester bluelab pH Pen-Digital pH Tester - Reliable & Accurate for High Yield Crops - Hand-Held Meter - Measures pH & Temperature in Solutions and Soil Solutions - Optimize Plant Health & Performance,White

$99.95 on Amazon

#3 Combo Meter for pH Temperature Bluelab Combo Meter for pH, Temperature & Conductivity in Water - Easy Calibration, Digital EC/TDS/PPM Tester for Hydroponics & Indoor Plants (METCOM)

$239.99 on Amazon

#4 Truncheon Nutrient Meter Bluelab Truncheon Nutrient Meter, Digital Conductivity Tester in Water (EC, 500, ppm 700, CF, TDS) Tool for Hydroponic System and Indoor Plant Grow

$105 on Amazon

#5 PENCON Conductivity Pen Bluelab PENCON Conductivity Pen and Digital TDS Meter, Water Tester for Temperature and Nutrient (CF, EC, PPM 500, PPM 700), TDS Testing Kit for Hydroponic System and Indoor Plant Grow

$89.99 on Amazon

#6 MONGUACON Guardian Monitor Bluelab MONGUACON Guardian Monitor Connect for pH, Temperature, and TDS in Water with Data Logging (Connect Stick not Included), Nutrient Meter for Hydroponic System and Indoor Plant Grow White

$400 on Amazon

#7 TRUNCOMV2 Commercial Bluelab TRUNCOMV2 Commercial Truncheon Nutrient Meter with Increased Measurement Range, Digital Conductivity (TDS, EC, ppm 500, ppm 700, CF) Tester in Water, Tool for Hydroponic System and Plant Grow

$104 on Amazon

#8 Conductivity Pen Meter Bluelab Conductivity Pen Meter and Probe Care Kit for Conductivity-Water, Temperature and Nutrient Tester (CF, EC, PPM 500/700) with EC Solution and Cleaner for Hydroponics and Indoor Growing

$109.99 on Amazon

#9 Combo Meter for pH Temperature Bluelab Combo Meter for pH, Temperature & Conductivity in Water - Easy Calibration, Digital EC/TDS/PPM Tester for Hydroponics & Indoor Plants (METCOM)

$239.93 on Amazon

#10 🔥 PROBPH pH Probe for Water Bluelab PROBPH pH Probe for Water, Replacement Electrode for Meter, Monitor, and Controller with Easy Calibration, Tool for Hydroponic System and Indoor Plant Grow

$84 on Amazon

#11 pH 4.0 & 7.0 Calibration Bluelab pH 4.0 & 7.0 Calibration Solution Kit - pH Meter & pH Pen Calibration for Balanced Nutrient Solution NIST Traceable | Hydroponics, Gardening & Growing Tents (500 ml/ 16.9 Fl Oz Each)

$39.99 on Amazon

#12 pH Pen Digital pH Tester bluelab pH Pen-Digital pH Tester - Reliable & Accurate for High Yield Crops - Hand-Held Meter - Measures pH & Temperature in Solutions and Soil Solutions - Optimize Plant Health & Performance,White

$110.95 on Amazon

#13 METCOMPLUS Combo Meter Bluelab METCOMPLUS Combo Meter Plus for pH, Temperature, and Conductivity in Water and Soil with Easy Calibration, Digital Nutrient (TDS/PPM) Testing Kit for Hydroponic System & Growing Indoor Plants

$259 on Amazon

#14 METCOM Combo Meter with Bluelab METCOM Combo Meter with Portable Carry Case and Complete Probe Care Kit-Measure pH, Temperature, Conductivity Digital TDS Tester in Water for Daily Use in Hydroponic Systems

$299 on Amazon

#15 Combo Meter for pH Temperature Bluelab Combo Meter for pH, Temperature & Conductivity in Water - Easy Calibration, Digital EC/TDS/PPM Tester for Hydroponics & Indoor Plants (METCOM)

$240.70 on Amazon

#16 PENCON Conductivity Pen Bluelab PENCON Conductivity Pen and Digital TDS Meter, Water Tester for Temperature and Nutrient (CF, EC, PPM 500, PPM 700), TDS Testing Kit for Hydroponic System and Indoor Plant Grow

$79.99 on Amazon

#17 STSOL120 KCL Storage Bluelab STSOL120 KCL Storage Solution 120ml pH Probe and Pen, Maintain Meters Used for Water, Soil, and Hydroponic System or Indoor Plant Grow White

$19.98 on Amazon

#18 METCOM Combo Meter with Bluelab METCOM Combo Meter with Portable Carry Case and Complete Probe Care Kit-Measure pH, Temperature, Conductivity Digital TDS Tester in Water for Daily Use in Hydroponic Systems

$239.85 on Amazon

#19 Combo Meter for pH Temperature Bluelab Combo Meter for pH, Temperature & Conductivity in Water - Easy Calibration, Digital EC/TDS/PPM Tester for Hydroponics & Indoor Plants (METCOM)

$214.81 on Amazon

#20 CAREKITPH pH Probe Care Bluelab CAREKITPH pH Probe Care Kit with Calibration Supplies, Storage Solution, and Brush, Used for Pen, Meter, Monitor, Controller and Tools for Hydroponic System and Indoor Plant Grow, Clear

$24.99 on Amazon