Root Catalog > Default Category > Controllers • Meters
 | Replacement Electrode for Hanna Checker pH Tester (HI 98103)At the cost of just a few rolls of litmus paper, you can have the industry's best pocket-size pH tester. The Checker supplies you with fast and accurate readings from 0.00 to 14.00 pH with a resolution of 0.01 pH. This compact tester features a large...Only $31.95 |
 | Tri-Meter Replacement pH Probe -- 3' CableReplacement probe for the Tri-Meters or the pH Meters. 6 month limited warranty.Only $66.95 |
 | Nutradip CMS PPM MeterThe Nutradip® CMS (constant monitoring system) Nutrient Meter has automatic temperature compensation and measures the TDS ppm/EC in your water. 2 year limited warranty on meter. 6 month limited warranty on the probe. InstructionsOnly $99.95 |
 | HM Digital Aquapro TDS Water Tester Model AP-1Measures total dissolved solids (TDS) and temperature. Automatic Temperature Compensation (ATC) Water-resistant housing Measurement Range: 0-5000 ppm Digital Calibration (push button) Auto-off function, data-hold function and low-battery indicator. Display:...Only $44.99 |
 | Replacement Probe for HM Digital Waterproof Combo Meter COM-100Measures electrical conductivity (EC), total dissolved solids (TDS) and temperature. Three different calibration options (KCl, 442TM, NaCl), each with its own non-linear conversion factor. Automatic Temperature Compensation (ATC) using three temperature...Only $46.23 |
 | HM Digital Handheld TDS Tester Model TDS-3Ideal for commercial use. Includes a carrying case with belt clip. Highly efficient and accurate due to its advanced microprocessor technology. Hold Function: saves measurements for convenient reading and recording. Auto-off function: the meter shuts...Only $36.95 |
 | HM Digital In-Line Dual TDS Monitor Model DM-1Displays TDS levels of the feed water and product water with in & out electrode probes. Highly efficient and accurate due to its advanced microprocessor technology. Auto-Off function conserves battery power. The unit shuts off automatically after...Only $44.99 |
 | Replacement Probe for HM Digital Waterproof pH Meter Model PH-200Measures pH and Temperature. Auto-ranging three point calibration with digital fine tuning. Includes 4 pH buffer solution in a sponge embedded in a clear cap. Waterproof housing. Simultaneous temperature display. Measurement Range: 0-14 pH. Digital automatic...Only $44.95 |
 | HM Digital 1000 PPM TDS Calibration SolutionFor optimal performance, re-calibrate your meters periodically or if testing TDS or conductivity levels in wide or different ranges. NaCl calibration solution. Comes in lightweight HDPE plastic bottles. Sealed with a coated foam liner. MSDSOnly $7.95 |
 | Oakton Ecotestr TDS LowNew OAKTON ECOTestr TDS Low pocket meter features a large ergonomically designed display so that you can easily view measurements at a glance. The stainless steel electrodes are both rugged and chemical resistant, for use in a variety of applications....Only $86.95 |
 | Oakton Multi PT Testr 35 (pH/TDS/TEMP)Great for water, laboratory or plant use, this multi Testr features single-junction pH electrodes for longer life and wider range of sample compatibility. Pin-style conductivity sensors feature stainless steel electrodes for chemical resistance and durability....Only $199.95 |
 | Replacement Probe for HortiStick 3-in-1 MultimeterThe HortiStick 3-in-1 brings the best of technology into one sleek meter. It combines the measurement of the three most crucial parameters needed for a successful harvest: pH, Conductivity, and Temperature. Package content: 1x Main Unit, 1x Hand Strap,...Only $116.95 |
 | HortiCare Nutrient Check PPMThe function of a nutrient solution or fertilizer mixture is to supply the plant roots with water, oxygen and essential mineral elements in soluble form. Each plant has its preferred nutrient concentration to facilitate the absorption process to the roots....Only $85.95 |
 | Dosatron Mini Seal Kit for Water Powered Doser 11 GPM 1:1000 to 1:112Dosatron mini-maintenance seal kit for D25RE09 VF - should be replaced on an annual basis if unit is used on a regular basis all year.Only $55.99 |
 | Dosatron Flow Restrictor - 3/4 in 14 GPM - D14 SeriesFlow Restrictors limit the flow of liquid in the line. It is recommended to install a flow restrictor on the inlet side of the Dosatron unit if there is any possibility of overflowing the unit. Choose from 3/4 in 10 GPM or 3/4 in 14 GPM.Only $69.99 |
 | Dosatron Flow Restrictor - 3/4 in 10 GPM - D25 SeriesFlow Restrictors limit the flow of liquid in the line. It is recommended to install a flow restrictor on the inlet side of the Dosatron unit if there is any possibility of overflowing the unit. Choose from 3/4 in 10 GPM or 3/4 in 14 GPM.Only $59.99 |
 | Dosatron Pressure Regulator w/ Gauge - 3/4 in (FPT x FPT)Dosatron pressure reducing valves are devices which, when installed on water systems, decrease the pressure from incoming water lines. 3/4 in NPT female inlet and outlet, working pressure: 15-87 psi, max incoming pressure: 230 psi. Max temp: 140 °F....Only $155.00 |
 | Dosatron In-Line Filter Kit w/ Unions - 3/4 in (200 Mesh / 80 Micron)Dosatron inline filter kit includes a cleanable, permanent, stainless steel filter that is a 200 mesh/80 micron. The inline connecters are 3/4 in FPT by 3/4 in FPT. No replacement cartridges necessary.Only $39.99 |