Root Catalog > Default Category > Controllers • Meters
 | Hanna PHEP 4 Tester With Replaceable ElectrodeWhen HANNA® introduced its first version of the pHep (pH electronic paper) in 1986, it immediately revolutionized the standard in pH measurement. pHep's ease-of-use in combination with its affordability made it possible for non-technical and technical...Only $110.95 |
 | Replacement Probe for Hanna DiST 5 Waterproof TesterThe original DiST (Dissolved Solids Tester) was first introduced in 1986 by HANNA®. Since then, Conductivity and Total Dissolved Solids measurements have never been easier. DiST's ease-of-use, in combination with its affordability, made it the standard...Only $69.49 |
 | Replacement Probe for Hanna HI9813-6N Waterproof pH/EC/TDS MeterHI 9813-6N is a versatile, water resistant multiparameter portable meter specifically designed for agricultural applications such as hydroponics, greenhouses, farming and nurseries. It features an extra large LCD that clearly displays the parameter...Only $146.95 |
 | Hanna Grochek Replacement Probe for Water Resistant pH Indicator & Temp. Monitor (HI1286)The gel-filled pH electrode has been specially designed to address the needs of growers. Its design guarantees greater clogging resistance in fertilizer solutions with high concentrations of phosphate, nitrate, etc. InstructionsOnly $65.95 |
 | Martini pH55/Temp TesterIP67 Waterproof pH tester with large dual-level LCD that displays pH and temperature (°C or °F). The large display shows readings in an extended range from 2.0 to 16.0 pH and simultaneously shows temperature from 5.0 to 105.0°C or 23.0 to 221.0°F....Only $82.15 |
 | Replacement Probe for Hanna Grochek Combo Monitor Model HI 991404The Combo HI 991404 replacement probe.Only $114.95 |
 | Martini pH55/Temp ProbeThe double injection electrode can be replaced in a very fast and simple way! The modular design allows easy electrode and battery replacement. InstructionsOnly $49.50 |
 | TDS Monitor Model SMS410The SMS 410 Smart TDS Monitor allows you to continuously monitor Total Disssolved Solids directly in your aquatic environment. Features include: a user selectable set point, visual LED alarm when readings go below the set point and easy single-point manual...Only $117.49 |
 | Replacement Probe for Smart pH/EC/TDS Combo. Meter Model SM802 and SM801Replacement Probe for Replacement probe Smart pH/EC/TDS Combo Meter SM801/802Only $98.95 |
 | Replacement Probe for Smart pH/EC/TDS Combo. Meter Model MW802This is the replacement for the supplied MA850 combination electrode of the 802.Only $98.95 |
 | Waterproof TDS Tester Model T75Model T75 Waterproof TDS tester with automatic temperature compensation and 1 point manual calibration range: 0.0 to 1999 ppm (mg/L), replaceable MA73075 probe. InstructionsOnly $77.95 |
 | Replacement Probe for Waterproof TDS Tester Model T75Model T75 Waterproof TDS tester with automatic temperature compensation and 1 point manual calibration range: 0.0 to 1999 ppm (mg/L), replaceable MA73075 probe. InstructionsOnly $71.95 |
 | Milwaukee Waterproof TDS Tester [model T76]Waterproof TDS tester with automatic temperature compensation and 1 point manual calibration range: 0.0 to 9990 ppm (mg/L), replaceable MA73076 probe. InstructionsOnly $84.95 |
 | Milwakee Smart pH/EC/TDS Combo. Meter Model MW802The MW802 is a compact portable meter with faster micro processor. This meter allows you to measure pH, EC and TDS with just one instrument and one single probe! This easier and faster to calibrate portable meter has a smaller, ergonomic and lighter case...Only $229.95 |
 | Control Wizard 1382 Calibration SolutionControl Wizard Products 1382 Conductivity Standard. Use to calibrate all meters that use the 1 EC to 500 ppm water standard.Only $4.95 |
 | Grower's Edge Large Display Thermometer & HygrometerMeasures indoor/outdoor temperature & indoor humidity. Stores the Min./Max. values of the indoor/outdoor temperature and indoor humidity. Switch between °C and °F. 12/24 hour mode switch. Recovery function on the Min./Max. values. Indoor temperature...Only $19.95 |
 | Grower's Edge Digital Thermometer/Hygrometer - Remote Sensor Only**This unit is just the remote sensor for the Ecoplus Digital Thermometer & Hygrometer base unit (716555). Large screen digital readout. Wireless sensor transmits up to 50 feet. Expandable to accept 2 additional sensors. Waterproof casing is chemical...Only $22.95 |
 | Grower's Edge Digital Thermometer/Hygrometer w/ RemoteThis digital thermometer/hygrometer comes with one remote sensor and can be read up to 50' from the sensor. This unit is expandable and can accept up to three sensors. Temperature/Hygrometer Display: Large screen digital readout. Wireless sensor transmits...Only $36.95 |