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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 81 to 100 (of 354 products) Result Pages: [<< Prev]   1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  [Next >>] 
 Sort by Popularity   Manufacturer   Product(s)   Model   Price-   Buy Now 
 GroChek replacement probe for HI9813-0   Hanna Instruments   GroChek replacement probe for HI9813-0 
Hanna Instruments GroChek replacement probe for HI9813-0 (HI1285-0)Keep your pH/conductivity/TDS tester running strong with a GroChek replacement probe. Built for the GroChek HI9813-0, this probe helps make your measurement device fast, efficient, accurate, and portable. Manufacturer's Product Information ... — Ships from Petaluma, CA, Santa Fe Springs, CA, Broomfield, CO, Fairless Hills, PA, Grand Prairie, TX and/or Medley, FL USA...more.
 hf-HI1285-0   $116.21 
 Hanna TDS Gro'Chek Stick Tester HI 981409   Hanna Instruments   Hanna TDS Gro'Chek Stick Tester HI 981409 
HI 981409 TDS Gro'Chek Stick Tester is a TDS tester ideal for mixing fertilizer. This tester will run for 2000 hours continuously on AA batteries.... Note: Calibration Buffer Solutions are available separately. — Ships from Seattle, Washington USA...more.
 eco-5521H   $115.95 
 HI1285-6 Replacement Probe.      HI1285-6 Replacement Probe. 
HI1285-6 Replacement Probe for NEW HI9813-6 (HY1743)... — Ships from Portland, Oregon USA...more.
 HY1771   $114.95 
 Bluelab Connect Stick   Bluelab   Bluelab Connect Stick 
Bluelab Connect Product Suite The Bluelab Guardian Monitor Connect, Bluelab Connect Stick, Bluelab Connect Range Extender and Bluelab Connect Software. The Bluelab Guardian Monitor Connect can connect wirelessly to a computer at the grow site via the Bluelab Connect Stick, which enables the data logging of pH, Conductivity and Temperature to the FREE Bluelab Connect Software, do... — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more.
 716486   $113.75 
 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 Petaluma, CA, Santa Fe Springs, CA, Broomfield, CO, Fairless Hills, PA, Grand Prairie, TX and/or Medley, FL USA...more.
 hf-OK3563420   $113.21 
 Milwaukee pH Monitor MC110   Milwaukee Instruments   Milwaukee pH Monitor MC110 
Milwaukee Instruments pH Monitor - MC110 Professional pH monitor User selectable Hi/Low Set Point Manual 2 points calibration Visual LED alarm Supplied with 12 VDC adapter, mounting kit, and 20ml pH 7.01 calibration solution Double junction pH electrode with 2m cable (BNC connector) ... Note: Calibration Buffer Solutions are available separately. — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more.
 716682   $112.06 
 Milwaukee pH Monitor MC120   Milwaukee Instruments   Milwaukee pH Monitor MC120 
Milwaukee Instruments pH Monitor - MC120 Professional pH monitor User selectable Hi/Low Set Point Manual 2 points calibration Visual LED alarm Supplied with 12 VDC adapter, mounting kit, and 20ml pH 7.01 calibration solution Double junction pH electrode with 2m cable (BNC connector) ... Note: Calibration Buffer Solutions are available separately. — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more.
 716684   $112.06 
 Replacement Probe for GroChek (HI1285).      Replacement Probe for GroChek (HI1285). 
HI1285 PROBE FOR older HI9813... — Ships from Portland, Oregon USA...more.
 HY1781   $111.95 
 DiST 5 Waterproof Meter.   Hanna Instruments   DiST 5 Waterproof Meter. 
Hanna Instruments model HI 98311. TDS ( reads in PPM), EC and temperature meter tester. Waterproof and designed to float. Feels great in your hand. Very stylish and modern. Low battery indicator. A great buy.... — Ships from Portland, Oregon USA...more.
 HY1742   $109.95 
 Hanna Conductivity Soil Test Pen (HI 98331)   Hanna Instruments   Hanna Conductivity Soil Test Pen (HI 98331) 
Hanna Conductivity Soil Test Pen (HI 98331) (eco-5523A)Hanna Soil Test Pen - The HI 98331 takes quick and accurate readings directly in soil. It is the only meter available that will take conductivity readings directly from the soil without creating a soil solution for testing. The meter also measures temperature and the conductivity readings are compensated for temperature... — Ships from Seattle, Washington USA...more.
 eco-5523A   $109.46 
 HANNA REPLACEMENT PROBE (HI1285-0) Special Order   Hanna Instruments   HANNA REPLACEMENT PROBE (HI1285-0) Special Order 
FOR Hanna Waterproof pH/EC/TDS Meter (Model HI 9813-0) HI 9813-0 allows you to measure pH, EC (conductivity) and TDS with just one instrument! This meter has a full-spectrum pH measurement range. The EC range goes to 4.00 mS/cm. In the TDS range, both instruments use a conversion factor from 0.56 to 0.72 for fertilizer readings, to ensure your measurements fully conform to in... — Ships separately from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more.
 716836   $107.81 
 GroChek pH Meter.   Hanna Instruments   GroChek pH Meter. 
HANNA GRO CHEK pH Meter. This meter provides a continuous digital pH reading. It is powered by a simple transformer. The electrode rests in your reservoir or nutrient tank and provides real-time pH monitoring. You can have a professional piece of equipment at consumer prices!... Note: Calibration Buffer Solutions are available separately. — Ships from Portland, Oregon USA...more.
 HY181   $106.95 
 Accurate pH 9   Control Wizard   Accurate pH 9 
This continuous pH monitor is rugged in design and function. The meter displays both pH and temperature and is unaffected by electromagnetic fields from pumps located in reservoirs. It has a tested back lit LCD display and that is bright enough to easily see but not strong enough to cause problems with flowering plants. It has both, a temperature and pH electrode for superior accur... Note: Calibration Buffer Solutions are available separately. — Ships from Portland, Oregon USA...more.
 CW499   $106.95 
 Accurate PPM 9   Control Wizard   Accurate PPM 9 
This continuous PPM monitor is rugged in design and function. The meter displays both PPM and temperature and is unaffected by electromagnetic fields from pumps located in reservoirs. It has a tested back lit LCD display and that is bright enough to easily see but not strong enough to cause problems with flowering plants. It has both, a temperature and PPM electrode for superior ac... — Ships from Portland, Oregon USA...more.
 CW514   $106.95 
 pH Monitor / Hi-Lo User Select Alarm   Milwaukee Instruments   pH Monitor / Hi-Lo User Select Alarm 
Milwaukee Instruments pH Monitor / Hi-Lo User Select Alarm (MIMC110)• pH Monitor, Range: 0.0 to 14.0 • 2 Point Manual Calibration, Accuracy of ±0.2 pH • Set Point Range: 3.5 to 7.5 pH • LED Visual Alarm Active when reading is Higher or Lower (user select) than the set point Supplied with 12 V DC Power Adapter, MA911B/2 Double Junction pH Probe, 20 ml. pH ... — Ships from Petaluma, CA, Santa Fe Springs, CA, Broomfield, CO, Fairless Hills, PA, Grand Prairie, TX and/or Medley, FL USA...more.
 hf-MIMC110   $106.46 
 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 Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more.
 716050   $105.00 
 COMMERCIAL TRUNCHEON METER (EC/PPM)   Bluelab   COMMERCIAL TRUNCHEON METER (EC/PPM) 
Bluelab Commercial Truncheon® EC(0.4-6.0), CF(4-60) and ppm scales (TDS and 700 scale) Fully waterproof Factory calibrated Auto sense on and off No external switches or adjustable buttons Battery life minimum 1 year (or shelf life of battery) 5 year Bluelab guarantee The Bluelab Commercial Truncheon® Nutrient Meter measures the strength of a nutrient solution, just ... — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more.
 716049   $105.00 
 Bluelab Truncheon Meter   Bluelab   Bluelab Truncheon Meter 
Bluelab Bluelab Truncheon Meter (BLU2000E)It is essential when growing with a hydroponic solution to KNOW what the strength of the solution is before feeding your plants AND while they are growing. This is easy if you use the Bluelab Truncheon® Nutrient Meter! To take a reading of your solution - simply place the probe head into the solution for 1-2 minutes to reach the same te... — Ships from Petaluma, CA, Santa Fe Springs, CA, Broomfield, CO, Fairless Hills, PA, Grand Prairie, TX and/or Medley, FL USA...more.
 hf-BLU2000E   $105.00 
 Commercial Truncheon Meter   Bluelab   Commercial Truncheon Meter 
Bluelab Commercial Truncheon Meter (BLU2100E)Big jobs require a big Truncheon! With a conductivity range right up to 6.0EC (60CF or 4200ppm), it will never leave you short. The Commercial Truncheon® Nutrient Meter has been designed for hydroponic crops that require a higher than normal EC or CF requirement during their growing cycle. It's super tough, fully waterproof, has no o... — Ships from Petaluma, CA, Santa Fe Springs, CA, Broomfield, CO, Fairless Hills, PA, Grand Prairie, TX and/or Medley, FL USA...more.
 hf-BLU2100E   $105.00 
 Replacement probe for CalCheck Meter (HI1285-6)   Hanna Instruments   Replacement probe for CalCheck Meter (HI1285-6) 
Replacement probe for CalCheck Meter (HI1285-6) Preamplified pH and EC Probe with CAL CHECK™ for use with HI 9813 Series. Recommended for greenhouses, hydroponics, environmental monitoring, water treatment, boilers and cooling towers.... — Ships from Seattle, Washington USA...more.
 eco-5528D   $104.21 
Displaying 81 to 100 (of 354 products) Result Pages: [<< Prev]   1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  [Next >>] 
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3/4" Grommet Each
The picture shows a TopHat grommet. This is NOT the Product. ..
3 of 5 Stars!
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GROW BAGS 7 GALLON 0.075MM (25/BOX) AVAILABLE IN CASE QUANTITIES ONLY
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