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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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What do we have here?
Displaying 1 to 20 (of 310 products) Result Pages:  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 
 WM pH TDS Cntrl. 15 VAC   Hanna Instruments   WM pH TDS Cntrl. 15 VAC 
Hanna Instruments WM pH TDS Cntrl. 15 VAC (HI9935-1)Add this 2-in-1 pH and TDS controller engineered for economical dosage of fertilizer solutions in hydroponics to your growroom. The product measures pH from 0 to 14 and TDS from 0 to 1999 mg/L (ppm). Two separate set points can be adjusted from 4 to 7 pH and 900 to 1800 ppm (mg/L). The relays are activated when the pH exceeds... Note: Calibration Buffer Solutions are available separately. — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
 hf-HI9935-1   $569.15 
 Watersafe Hydroponics Water Test Kit (12/Cs)      Watersafe Hydroponics Water Test Kit (12/Cs) 
Watersafe Hydroponics Water Test Kit Have you ever had your water analyzed? The hydroponics water test kit gives growers an inexpensive, easy, and reliable way to evaluate water quality. Testing results should guide your decisions on water treatment. It's critical to test your water regularly to remain informed on the constantly changing conditions.   Water quality ... This item is sold individually. — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA. Note: the WA warehouse is moving in Jul & Aug, some orders may be delayed 1-2 days....more info.
 748290   $18.95 
 Waterproof PT Testr 35 (pH & TDS)   Oakton   Waterproof PT Testr 35 (pH & TDS) 
Oakton Waterproof PT Testr 35 (pH & TDS) (OK3542505)Two important measurements in one instrument. The PCTestr tests conductivity and pH while the PTTestr tests TDS and pH. They feature easy-to-read displays, push-button calibration, HOLD function, and error messages. Valox® housing and stainless steel electrodes offer good chemical compatibility and durability, and are designed... — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
 hf-OK3542505   $135.25 
 Waterproof pH/Temperature Meter   HM Digital   Waterproof pH/Temperature Meter 
HM Digital Meters Waterproof pH/Temperature Meter (HMDPH200)FEATURES Measures 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, so you can see if it's dried up Waterproof housing Simultaneous temperature display Measurement Range: 0-14 pH Digital Calibration (push button) ... — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
 hf-HMDPH200   $66.93 
 Waterproof PC Testr 35 (EC & pH)   Oakton   Waterproof PC Testr 35 (EC & pH) 
Oakton Waterproof PC Testr 35 (EC & pH) (OK3542500)Two important measurements in one instrument. The PCTestr tests conductivity and pH while the PTTestr tests EC and pH. They feature easy-to-read displays, push-button calibration, HOLD function, and error messages. Valox® housing and stainless steel electrodes offer good chemical compatibility and durability, and are designed t... — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
 hf-OK3542500   $136.59 
 Waterproof EcoTster pH2   Oakton   Waterproof EcoTster pH2 
Oakton Waterproof EcoTster pH2 (OK35423-10)Economical price and an easy-to-read display! Waterproof, dustproof housings float Easy to use; push-button calibration with auto buffer recognition Low-cost pocket sized meter is perfect for less demanding applications Includes transparent electrode cover / sample cup Push-button calibration, HOLD function, and error messagesOAKTON's ne... — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
 hf-OK35423-10   $60.92 
 Waterproof EcoTster pH1   Oakton   Waterproof EcoTster 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   $50.21 
 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. Note: the WA warehouse is moving in Jul & Aug, some orders may be delayed 1-2 days....more info.
 716115   $47.00 
 WATERPROOF ECOTESTR 2   Oakton   WATERPROOF ECOTESTR 2 
Oakton® EcoTestr™ PH2 Automatic temperature compensation Waterproof, dust proof housing that floats Easy to use, push-button calibration with auto buffer recognition Low-cost pocket-sized meter 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 (includ... — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA. Note: the WA warehouse is moving in Jul & Aug, some orders may be delayed 1-2 days....more info.
 716106   $48.49 
 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. Note: the WA warehouse is moving in Jul & Aug, some orders may be delayed 1-2 days....more info.
 716104   $48.54 
 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   $51.28 
 Tri Calibration kit PPM/EC, pH 4, pH 7 500ml (No USPS)   FHD (Future Harvest Development)   Tri Calibration kit PPM/EC, pH 4, pH 7 500ml (No USPS) 
Nutradip (Tri Meter) Tri Calibration kit PPM/EC, pH 4, pH 7 500ml (ND1100041)Monitoring your nutrient strength and the acidity in your nutrient solution is a simple process with outstanding results! Start managing your crop's nutrient requirements with Nutradip, and get the results you deserve! Managing nutrient strength and pH levels is critical to achieving maximum yields. The f... Note: Calibration Buffer Solutions are available separately. — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
 hf-ND1100041   $16.93 
 Tower of Power 6 Outlet Surge Protector   HydroFarm   Tower of Power 6 Outlet Surge Protector 
Tower of Power (eco-4529)Tower of Power Hydrofarm’s Tower of Power Introducing Tower of Power -The Remedy for Packed Power StripsSay goodbye to over-crowded, under-utilized power strips. Hydrofarm's TOWER OF POWER offers 6 outlets with enough room to accommodate even the bulkiest timers and adapters. The Tower of Power will handle all you can throw at it. In your home office i... — Ships from Seattle, Washington USA....more info.
 eco-4529   $34.79 
 TDS/Conductivity/Salinity Pocket Pen   HydroFarm   TDS/Conductivity/Salinity Pocket Pen 
TDS/Conductivity/Salinity Pocket Pen (JLPT1)This instrument is designed to be extremely accurate, fast and simple to use in diverse water quality applications. Advanced features include the ability to select from 3 different solution types that model the characteristics of the most commonly encountered types of water; proprietary temperature compensation and TDS conversion algorit... — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
 hf-JLPT1   $147.61 
 TDS-3 Handheld TDS meter   HM Digital   TDS-3 Handheld TDS meter 
HM Digital Meters TDS-3 Handheld TDS meter (HMDTDS3)Ideal for commercial use, the TDS-3 includes a carrying case with belt clip. It is highly efficent and accurate due to its advanced microprocessor technology. It features a measurment range of 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1 ppm. From 1000 to 9990 ppm, the resolution is in increments of 10ppm, indi... Note: Calibration Buffer Solutions are available separately. — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
 hf-HMDTDS3   $20.03 
 T76 WATERPROOF TDS TESTER (1/CASE)   Milwaukee Instruments   T76 WATERPROOF TDS TESTER (1/CASE) 
Milwaukee Waterproof TDS Tester [model T75] T76 WATERPROOF TDS TESTER Model T75 Waterproof TDS tester with automatic temperature compensation and 1 point manual calibration range: 0.0 to 1999 ppm (mg/L), replaceable MA73075 probe. Manufacturer's Product Information 2007 MSRP Each $76.95 Case Weight0.70... Note: Calibration Buffer Solutions are available separately. This item is sold individually. — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA. Note: the WA warehouse is moving in Jul & Aug, some orders may be delayed 1-2 days....more info.
 716610   $55.76 
 T75 WATERPROOF TDS TESTER (1/CASE)   Milwaukee Instruments   T75 WATERPROOF TDS TESTER (1/CASE) 
Milwaukee Waterproof TDS Tester [model T75] T75 WATERPROOF TDS TESTER Model T75 Waterproof TDS tester with automatic temperature compensation and 1 point manual calibration range: 0.0 to 1999 ppm (mg/L), replaceable MA73075 probe. Manufacturer's Product Information 2007 MSRP Each $76.95 Case Weight0.71... Note: Calibration Buffer Solutions are available separately. This item is sold individually. — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA. Note: the WA warehouse is moving in Jul & Aug, some orders may be delayed 1-2 days....more info.
 716605   $58.14 
 SureTest pH Test Strip Kit 5.5 - 8.0 (litmus paper)      SureTest pH Test Strip Kit 5.5 - 8.0 (litmus paper) 
The SureTest™ Kit includes everything you need to test the pH of your water or nutrient solution. Includes 15 ft of pH dependent color changing paper. The testers have a pH range from 5.5 to 8.0 in either 0.2 or 0.3 increments. Full color chart to match your pH test results.... Note: Calibration Buffer Solutions are available separately. — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA. Note: the WA warehouse is moving in Jul & Aug, some orders may be delayed 1-2 days....more info.
 716380   $6.82 
 Sure Test pH Indicator Solution Test Kit 1 oz (24/Cs)      Sure Test pH Indicator Solution Test Kit 1 oz (24/Cs) 
SureTest™ liquid indicator pH test kit provides a fast and accurate way to determine the pH of you fertilizer solution. The attached snap caps on both the reagent bottle and the test vial allows rapid determination of pH without ever having to set each container down. Collect a sample add 2-3 drops of of the indicator solution and compare the color of the sample to the chart on the... Note: Calibration Buffer Solutions are available separately. This item is sold individually. — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA. Note: the WA warehouse is moving in Jul & Aug, some orders may be delayed 1-2 days....more info.
 716384   $3.52 
 Spare Electrode      Spare Electrode 
Spare Electrode (970301)Spare electrode for Prestige PH Meter (part #397100) Manufacturer's Product Information MSRP $39.95 Dimensions1.5 x 1 x 2 ... — Ships from DL: Livermore, California USA....more info.
 dl-970301   $28.95 
Displaying 1 to 20 (of 310 products) Result Pages:  1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  [Next >>] 
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