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What do we have here?
Meters, Timers & Instruments: pH, EC, PPM & TDS Testers: pH, EC, PPM & TDS Meters, Monitors, Testers, Pens & Test Kits for Water & Soil

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What do we have here?
Displaying 181 to 200 (of 289 products) Result Pages: [<< Prev]   1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  [Next >>] 
 Sort by Popularity   Manufacturer   Product(s)   Model   Price-   Buy Now 
 HM WATERPROOF EC/TDS/TEMP COMBO METER   HM Digital   HM WATERPROOF EC/TDS/TEMP COMBO METER 
HM Digital Waterproof EC-TDS-TEMP Combo Meter COM-100 Measures 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 coefficients. Waterproof housing. Measurement Range: 0-9990 µS; 0-8... — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA....more info.
 716160   $50.97 
 Waterproof EC/TDS/Temp Combo Meter   HM Digital   Waterproof EC/TDS/Temp Combo Meter 
HM Digital Meters Waterproof EC/TDS/Temp Combo Meter (HMDCOM100) Measures EC, TDS and temperature. It has three different calibration options (KCl, 442TM, NaCl), each with its own non-linear conversion factor, and Automatic Temperature Compensation (ATC) using three temperature coefficients. Measurement Range: 0-9990 uS; 0-8560 ppm (auto ranging). ... — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
 hf-HMDCOM100   $50.97 
 Oakton Waterproof EcoTestr pH1   Oakton   Oakton Waterproof EcoTestr pH1 
Oakton Waterproof EcoTster pH1 (OK35423-00)Ideal for Student, Hydroponics, and Hobbyist use! Economical, pocket sized meter is perfect for less demanding applications Waterproof, dustproof housings float Easy to use; push-button calibration with auto buffer recognition Includes transparent electrode cover / sample cup Push-button calibration, HOLD function, and error messagesOAKT... — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
 hf-OK35423-00   $49.91 
 pH Controller Sampling Kit   HydroFarm   pH Controller Sampling Kit 
Autopilot pH Controller Sampling Kit (APCEPH1SK)pH sampling assembly, allows for more accurate readings. Sampling kit includes a submersible pump, 3/4" x 5' tubing and molded sensor assembly with mounting bracket. The sampling assembly provides a stable method to mount the pH and temperature sensors. It uses a submersible pump to mix the water and to provide constant water fl... — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
 hf-APCEPH1SK   $49.89 
 WATERPROOF ECOTESTR 1   Oakton   WATERPROOF ECOTESTR 1 
Oakton® EcoTestr™ PH1 Economical, pocket-sized meter Waterproof, dust proof housing that floats Easy to use; push-button calibration with auto buffer recognition Includes transparent electrode cover / sample cup Push-button calibration, HOLD function, and error messages Range: 0.0 to 14.0 pH Power: four 1.5 V button cell batteries (included)... — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA....more info.
 716104   $49.69 
 DiST 1 TDS Tester   Hanna Instruments   DiST 1 TDS Tester 
Hanna Instruments DiST 1 TDS Tester (HI98301)DiSTs are rugged and reliable pocket-sized testers that offer quick and accurate readings of conductivity or TDS. The DiST family of testers is widely used for monitoring EC/TDS in drinking water, water conditioning, reverse osmosis, cooling towers, wastewater, laboratories, agriculture, aquaculture and aquariums, hydroponics, and the pr... Note: Calibration Buffer Solutions are available separately. — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
 hf-HI98301   $49.24 
 WATERPROOF ECOTESTR TDS LOW   Oakton   WATERPROOF ECOTESTR TDS LOW 
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. Other features include ATC (Automatic Temperature Compensation), Hold Function, it is completely wate... Note: Calibration Buffer Solutions are available separately. — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA....more info.
 716115   $48.11 
 Bluelab Replacement pH Probe for Guardian, Combo, & pH Meter   Bluelab   Bluelab Replacement pH Probe for Guardian, Combo, & pH Meter 
Available Tuesday 09 January, 2018
Bluelab Bluelab Replacement pH Probe for Guardian, Combo, & pH Meter (BLU24102)Easy to clean because of its bullet shaped glass bulb. Fully waterproof and less fragile than all-glass electrodes because of its tough polypropylene barrel. Gel filled (non-refillable) making it maintenance free and a double junction reference providing longer life! ... Note: Calibration Buffer Solutions are available separately. — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
 hf-BLU24102   $46.59 
 REPLACEMENT PROBE FOR BLUELAB COMBINATION METER & pH MONITORS   Bluelab   REPLACEMENT PROBE FOR BLUELAB COMBINATION METER & pH MONITORS 
Blue Lab Combo Meter PH REPLACEMENT ELECTRODE BLUE Light weight and portableMeasures pH, Nutrient and TemperatureThree display options for nutrient - EC, CF, ppm (500 scale)Two display options for temperature (C or F)Three calibration points, 4, 7 and 10 pHTemperature at a push of a buttonSimple push button pH calibrationAuto turn off functionLarge 13mm (1/2) digital display ... Note: Calibration Buffer Solutions are available separately. — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA....more info.
 716445   $46.59 
 pH Checker 1.   Hanna Instruments   pH Checker 1. 
HANNA pH CHECKER 1 (LIQUIDS ONLY) Digital readout.Not temperature compensating but a very good value. We don't get many of these returned so we keep on selling them. Out-performs their more expensive models. Replaceable electrode.... — Ships from Portland, Oregon USA....more info.
 HY1861   $46.38 
 MI MA73076 REPLACEMENT PROBE FOR C65/T76 (1/CASE)   Milwaukee Instruments   MI MA73076 REPLACEMENT PROBE FOR C65/T76 (1/CASE) 
Milwaukee Waterproof EC Tester [model C65] (MA73076)REPLAPROBE/C65/T76(DS Model C65 Waterproof conductivity tester with automatic temperature compensation and 1 point manual calibration range: 0 to 1999 S/cm, replaceable MA73075 probe. Manufacturer's Product Information 2007 MSRP Each $52.95 Case W... This item is sold individually. — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA....more info.
 716611   $45.48 
 Probe pH Electrode   FHD (Future Harvest Development)   Probe pH Electrode 
Nutradip (Tri Meter) Probe pH Electrode (ND1100053)Nutradip pH Probes are a reliable way to measure acidity in your nutrient solution. This probe is a continuous monitoring pH meter with automatic temperature compensation, with DC power built in for portability. Nutradip probes are engineered for accuracy and durability, helping growers measure and monitor their success for over 15... Note: Calibration Buffer Solutions are available separately. — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
 hf-ND1100053   $45.25 
 Accurate pH 7.   Control Wizard   Accurate pH 7. 
Control Wizard Products is now introducing its Accurate pH 7 pH-moisture meter for soil growers. Until now, soil growers with the need to keep careful tabs on the pH of their soil have had to rely on either cheap and hokey junk meters or meters that are very expense and hard to get. This new meter is the best of both worlds. It is relatively inexpensive and is manufactured to high ... Note: Calibration Buffer Solutions are available separately. — Ships from Portland, Oregon USA....more info.
 CW520   $45.24 
 Control Wizard Accurate pH 8   Control Wizard   Control Wizard Accurate pH 8 
Control Wizard Accurate pH 8 ACCURATE PH 8 Professional pH and Moisture Meter with 12" probe. Operation is simple. Clean the electrodes and place the meter into the soil. A pH reading is automatically displayed. Press the white button and a moisture reading is displayed. It works by utilizing the electronic ground field effect of the earth and two dissimilar metals. No batter... Note: Calibration Buffer Solutions are available separately. — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA....more info.
 716578   $44.93 
 GroChek EC Electrode   Hanna Instruments   GroChek EC Electrode 
Hanna Instruments GroChek EC Electrode (HI7632)Hanna replacement EC electrode for pocket testers. Manufacturer's Product Information MSRP each $57.95 Dimensions3 x 1.8 x 6.5 Case Quantity1 ... — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
 hf-HI7632   $43.92 
 Accurate pH 4      Accurate pH 4 
This meter utilizes the same body and electronics as the CWP Instruments Accurate pH 3 but has the added advantage of a larger corded electrode. The larger electrode enhances the meters electronic circuitry making it not only very accurate but also it has very stable readings.The 30 inches long corded electrode allows the user to test a large body of solution without the chance of ... Note: Calibration Buffer Solutions are available separately. — Ships from Portland, Oregon USA....more info.
 CW495   $43.48 
 Dosatron Flow Restrictor - 3/4 in 10 GPM - D25 Series      Dosatron Flow Restrictor - 3/4 in 10 GPM - D25 Series 
Flow 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.... — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA....more info.
 709020   $43.26 
 Double Junction PH Probe for MW100   Milwaukee Instruments   Double Junction PH Probe for MW100 
Milwaukee Instruments Double Junction PH Probe for MW100 (MISE220)Double junction pH electrode with 1 meter ccable and gel filled electrolyte solution for all "MW" and old style "SM" pH units.**Note: This probe replaces the old MA911B/1 Manufacturer's Product Information ... Note: Calibration Buffer Solutions are available separately. — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
 hf-MISE220   $42.59 
 HM DIGITAL PH 80   HM Digital   HM DIGITAL PH 80 
HM Digital pH Meter Model PH-80 Resolution: pH 0.1 pH, 0.00 - 14.0 pH. Accurate to ±0.1 pH. Hold button and auto shut-off. Automatic Calibration: Auto-ranging to 4, 7 or 10 pH. Very reliable and long lasting. Low battery indicator. Clear cap to notice moisture (or lack of) on probe. Glass encased referenc... Note: Calibration Buffer Solutions are available separately. — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA....more info.
 716155   $41.93 
 PH/Temperature Meter   HM Digital   PH/Temperature Meter 
HM Digital Meters PH/Temperature Meter (HMDPHM80)pH/temperature meter. Manufacturer's Product Information MSRP each $62.95 Dimensions2.25 x 2.25 x 3.75 Case Weight3 Case Quantity10 ... — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
 hf-HMDPHM80   $41.93 
Displaying 181 to 200 (of 289 products) Result Pages: [<< Prev]   1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  [Next >>] 
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