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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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Displaying 201 to 220 (of 311 products) Result Pages: [<< Prev]   1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  [Next >>] 
 Sort by Popularity   Manufacturer   Product(s)+   Model   Price   Buy Now 
 Nutradip PPM AC/DC Combo Meter   FHD (Future Harvest Development)   Nutradip PPM AC/DC Combo Meter 
Nutradip (Tri Meter) Nutradip PPM AC/DC Combo Meter (ND1100037)These continuous monitoring meters feature automatic temperature compensation, with high quality probes and AC/DC power built-in for portability. Engineered for accuracy and durability, they are lightweight, splash resistant and have an easy-to-read display. Wall mount or hand held. Includes replaceable 9 volt battery a... — Ships from HF: OR, CA, CO, PA, TX, FL USA (not via USPS)....more info.
 hf-ND1100037   $80.34 
 OAKTON 1413 CONDUCTIVITY SOL. 500ML   Oakton   OAKTON 1413 CONDUCTIVITY SOL. 500ML 
Oakton® 1413 TDS Solution... — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA (not via USPS)....more info.
 716114   $15.29 
 Oakton EcoTester CTS Pocket Conductivity, Salinity, and TDS Meter   Oakton   Oakton EcoTester CTS Pocket Conductivity, Salinity, and TDS Meter 
Oakton® Conductivity, TDS and Salinity in one meter. Expanded 4-digit dual-line display shows conductivity and temperature readings simultaneously. Additional key provides an easier, more intuitive interface. Improved cap functions as a sample cup and as a stabilizing base to stand the meter upright. Rugged IP67-rated housing is waterproof and floats. Battery level indicator flashe... Note: Calibration Buffer Solutions are available separately. — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA (not via USPS)....more info.
 716124   $66.96 
 Oakton Low/High/EC High Replacement Sensor   Oakton   Oakton Low/High/EC High Replacement Sensor 
Oakton Oakton Low/High/EC High Replacement Sensor (OK3566117)Purchase this replacement sensor for your Oakton Low/High/EC High tester and keep your instrument running in the most efficient shape possible. Note that this is a replacement sensor; purchase the Oakton device separately. Replacement sensors and solutions: OK-35661-17 for TDS tester Low, High, ECTestr High OK-35653-13 ... — Ships from HF: OR, CA, CO, PA, TX, FL USA (not via USPS)....more info.
 hf-OK3566117   $54.90 
 OAKTON MULTI PTTESTER 35 (PH/TDS/TEMP)   Oakton   OAKTON MULTI PTTESTER 35 (PH/TDS/TEMP) 
Oakton® MULTI PT Testr 35 One pocket sized meter for pH, TDS and temperature! Up to 5 point pH calibration with NIST or USA auto buffer recognition. 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 chem... — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA (not via USPS)....more info.
 716108   $137.75 
 Oakton pH Testers Replacement Sensor   Oakton   Oakton pH Testers Replacement Sensor 
Oakton Oakton pH Testers Replacement Sensor (OK3562438)Expand the lifetime of your Oakton pH tester by keeping these replacemen sensors on hand. These pH testers work with Oakton's line of 10, 20, and 30 series pHtestrs (OK3563410, OK3563420, and OK3563430). Manufacturer's Product Information ... Note: Calibration Buffer Solutions are available separately. — Ships from HF: OR, CA, CO, PA, TX, FL USA (not via USPS)....more info.
 hf-OK3562438   $72.31 
 Oakton pHTestr 10 - .1 pH Accuracy  ATC*   Oakton   Oakton pHTestr 10 - .1 pH Accuracy ATC* 
Oakton Oakton pHTestr 10 - .1 pH Accuracy ATC* (OK3563410)Optimize nutrient strength during growth, flowering, and fruiting by knowing exactly what is going on with your plants. Use the Oakton pH tester with accurate ATC to get instant at-a-glance readings. Features Reliable waterproof, dustproof housing Replaceable electrode to provide long life and value Auto shutoff conserves ... Note: Calibration Buffer Solutions are available separately. — Ships from HF: OR, CA, CO, PA, TX, FL USA (not via USPS)....more info.
 hf-OK3563410   $93.06 
 Oakton pHTestr 20 - .01 pH Accuracy *ATC   Oakton   Oakton pHTestr 20 - .01 pH Accuracy *ATC 
Oakton Oakton pHTestr 20 - .01 pH Accuracy *ATC (OK3563420)Optimize nutrient strength during growth, flowering, and fruiting by knowing exactly what is going on with your plants. Use the Oakton pH tester with accurate ATC to get instant at-a-glance readings. Features Reliable waterproof, dustproof housing Replaceable electrode to provide long life and value Auto shutoff conserves ... Note: Calibration Buffer Solutions are available separately. — Ships from HF: OR, CA, CO, PA, TX, FL USA (not via USPS)....more info.
 hf-OK3563420   $105.12 
 Oakton pHTestr 30 - .01 pH Accuracy Temperature Display *ATC   Oakton   Oakton pHTestr 30 - .01 pH Accuracy Temperature Display *ATC 
Oakton Oakton pHTestr 30 - .01 pH Accuracy Temperature Display *ATC (OK3563430)Optimize nutrient strength during growth, flowering, and fruiting by knowing exactly what is going on with your plants. Use the Oakton pH tester with accurate ATC to get instant at-a-glance readings. Features Reliable waterproof, dustproof housing Replaceable electrode to provide long life and value Aut... Note: Calibration Buffer Solutions are available separately. — Ships from HF: OR, CA, CO, PA, TX, FL USA (not via USPS)....more info.
 hf-OK3563430   $114.49 
 Oakton Replaceable Electrodes pH WP 2 Pen   Oakton   Oakton Replaceable Electrodes pH WP 2 Pen 
Oakton Oakton Replaceable Electrodes pH WP 2 Pen (OK3562429)This part number is just for a replacement electrode for your Oakton pH WP 2 pen, not the actual unit itself. Optimize nutrient strength during growth, flowering, and fruiting. Reliable waterproof, dustproof housing and replaceable electrode provide long life and value, meaning you won't need to invest in or... Note: Calibration Buffer Solutions are available separately. — Ships from HF: OR, CA, CO, PA, TX, FL USA (not via USPS)....more info.
 hf-OK3562429   $60.92 
 Oakton Waterproof EC Tester 11+   Oakton   Oakton Waterproof EC Tester 11+ 
Oakton Oakton Waterproof EC Tester 11+ (OK3566235) Automatically or manually select measuring rangeWaterproof, dustproof housings float Push-button calibration, HOLD function, and error messages Use these testers for either cup-style or dip-style measurements. For cup style, pour a small amount of your sample directly into the sensor cup until it overflows; for dip style, simply ... — Ships from HF: OR, CA, CO, PA, TX, FL USA (not via USPS)....more info.
 hf-OK3566235   $114.49 
 OAKTON WATERPROOF pH TESTER 10   Oakton   OAKTON WATERPROOF pH TESTER 10 
Oakton Waterproof Double Junction pHTestr® 10 Large Display WATERPROOF PH TESTER 10 Automatic Temperature Compensation (ATC)Push-button three-point calibrationMicroprocessor-basedAuto buffer recognitionHold functionCertifiable to IP67 standardspH range - 1.0 to 15.0 pHReplaceable double junction electrode... use Testr body many times over, which saves you money ... Note: Calibration Buffer Solutions are available separately. — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA (not via USPS)....more info.
 716046   $94.94 
 OAKTON WATERPROOF pH TESTER 30   Oakton   OAKTON WATERPROOF pH TESTER 30 
Oakton Waterproof Dbl Junction pHTestr® 30 w Temperature WATERPROOF PH TESTER 30 Dual Display of pH & TemperatureHigh 0.01 pH accuracy Simultaneous pH and temperature (C) displaypH range - 1.0 to 15.0 pH Three point push-button calibrationDouble junction electrode ideal for dirty water, heavy sulfides and organicsIncreased reference gel volume offers significantly ... Note: Calibration Buffer Solutions are available separately. — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA (not via USPS)....more info.
 716048   $116.70 
 Oakton Waterproof TDS Tester11+   Oakton   Oakton Waterproof TDS Tester11+ 
Oakton Oakton Waterproof TDS Tester11+ (OK3566215)The Oakton TDSTestr 11 Series of TDS testers has a large, easy-to-read two-line display that shows units, measurement status, and a battery life indicator. The replaceable electrode allows for reuse of the same meter body over and over. The tester's temperature readout simultaneously displays in °C or °F. The full reading is... Note: Calibration Buffer Solutions are available separately. — Ships from HF: OR, CA, CO, PA, TX, FL USA (not via USPS)....more info.
 hf-OK3566215   $113.15 
 Oakton WP EC Tester 11   Oakton   Oakton WP EC Tester 11 
Oakton Oakton WP EC Tester 11 (OK3566230)•Automatically or manually select measuring range•Waterproof, dustproof housings float Push-button calibration, HOLD function, and error messages Use this tester for either cup-style or dip-style measurements. For cup style, pour a small amount of your sample directly into the sensor cup until it overflows; for dip style, simply im... — Ships from HF: OR, CA, CO, PA, TX, FL USA (not via USPS)....more info.
 hf-OK3566230   $85.70 
 Oakton WP TDS Tester 11   Oakton   Oakton WP TDS Tester 11 
Oakton Oakton WP TDS Tester 11 (OK3566210)Test nutrient concentration and check temperature with one testr. All the features of the TDS/ECTestrs and more. Analyze hydroponic solutions using either cup-style or dip-style measurements, with a single instrument. Cup-style is ideal for small volumes, samples from valves, or when impractical to use dip-style sensors. ... Note: Calibration Buffer Solutions are available separately. — Ships from HF: OR, CA, CO, PA, TX, FL USA (not via USPS)....more info.
 hf-OK3566210   $83.02 
 ORIGINAL TRUNCHEON METER MEASURE EC AND PPM   Bluelab   ORIGINAL TRUNCHEON METER MEASURE EC AND PPM 
Original Truncheon™ Meter TRUNCHEON METER (EC/PPM) Features of this reliable meter include: EC, CF and ppm scales, factory calibrated, fully waterproof, auto turn on and off. It is powered by three standard AA batteries. There are no external switches or adjustment knobs. 5 year Bluelab® Guarantee (1 year for probe). Manufacturer's Pro... — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA (not via USPS)....more info.
 716050   $93.74 
 PH ALERT   Seachem   PH ALERT 
Seachem pH Alert™ 6 MONTH MONITOR pH Alert™ is a unique color device designed to be placed in the aquarium or filter and monitor pH continuously. A sensor changes color reversibly to alert you shifts to in pH levels between 5.8 and 8.6. Freshwater Only.... — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA (not via USPS)....more info.
 729002   $6.59 
 pH Checker 1 Replacement Probe.   Hanna Instruments   pH Checker 1 Replacement Probe. 
HANNA pH CHECKER 1 Replacement Electrode for Hanna model HY1861.... — Ships from Portland, Oregon USA....more info.
 HY190   $27.99 
 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   $40.27 
Displaying 201 to 220 (of 311 products) Result Pages: [<< Prev]   1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  [Next >>] 
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