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Displaying 41 to 60 (of 691 products)

ONiLAB Benchtop Lab pH Meter, 0.01 pH Accuracy, 1-3 Points Auto Calibration, 3-in-1 pH/Temp. Electrode

$249.99

$ 99 .00 $99.00

4.6
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Bluetooth Swimming Pool Water Tester 6-in-1 EC/Salinity/pH/ORP/Temperature/Chlorine Meter, Wireless Floating Smart Pool Monitor Water Tester for Pools, Hot Tubs, & Swim Spas

$59.90

$ 27 .99 $27.99

4.5
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Gain Express 6-in-1 Waterproof pH/ORP/TDS/EC (Conductivity)/Salinity/Temp Meter Pocket Size Multi-Parameter Water Quality Tester Kit Replaceable ORP Probe

$143.90

$ 70 .99 $70.99

4.9
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Checker Plus pH Tester

$59.99

$ 31 .99 $31.99

4.4
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PH Meter, 0.01 High Accuracy Pocket Size with 0-14 PH Testing Range PH Tester, Digital PH Meter for Water, Water Tester for Hydroponics, Drinking Water and Pool, Light Blue

$9.99

$ 4 .99 $4.99

4.5
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HACH 9531000E Pocket Pro pH and Temperature Tester

$125.57

$ 58 .99 $58.99

4.8
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Water Quality Tester for Drinking Water, Portable 6-in-1 TDS Meter TOC, COD, EC, UV275, Temp&TDS, Digital Drinking Water Quality Tester for Home, RV, Hiking, Camping, Travel, Well, Tap, Water Purifier

$47.49

$ 22 .99 $22.99

4.6
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Bluelab OnePen - a 3-in-1 Temperature, EC/PPM and pH Meter, Lightning Fast Readings - Bluetooth Data Sharing & in-App Tracking - Replaceable Probe

$249.00

$ 99 .00 $99.00

4.7
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pH Meter, TDS/pH/Temperature 3-in-1 pH Meter for Water, 0-14 pH Measurement Range Digital pH Meter, 0.01 High Precision Water Quality Digital pH Tester with ATC, pH TDS Test Meter for Drinking Water

$23.99

$ 12 .99 $12.99

4.7
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IPS Spare Resin for PH-200 No.247 Made in Japan Tsubame Sanjo

$8.92

$ 3 .99 $3.99

4.7
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Digital pH Meter for Soil, Soil pH Tester for Potted Plants, Professional pH Reader for Soil and Water, Electronic Soil pH Test Kit for Garden, Lawn, Greenhouse, Indoor & Outdoor, Farming, Yard Use

$35.99

$ 18 .99 $18.99

4.3
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Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe

$80.00

$ 33 .99 $33.99

4.8
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Gain Express ORP Redox Meter Tester -1999~1999mV, 1-Point Calibration, Oxidation Reduction Potential, Aquariums, Swimming Pools, Water Treatment Systems, Aquaculture, Spa

$26.90

$ 11 .99 $11.99

4.7
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[NEW] Portable Salinity Tester Meter | Hand Held Detector with Display | Kitchen Accessory | Accurate Salinity Meter for Testing Quality

$10.69

$ 5 .99 $5.99

4.6
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YK-6N Hydroponics Monitor Replacement Probe,YK-6F Aquarium pH Monitor Replacement Probe

$24.99

$ 12 .99 $12.99

4.5
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Apera Instruments PH910 Benchtop Lab pH Meter Kit with LabSen 211 Refillable Glass pH Electrode

$363.04

$ 99 .00 $99.00

5.0
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2 in 1 pH & Temperature Monitor, pH Meter with Backlight Function, Dual Display 0.00~14.00pH °C/ °F Water Quality Tester pH Monitor for Water, Fish Tank, Aquarium, Hydroponics, Pools

$34.90

$ 17 .99 $17.99

4.6
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lab ph Meters with ATC,Digital ph kit,±0.01 pH Accuracy, Digital PH Meter with Backlit LCD Display, 1-3Points Auto Calibration,Portable pH Meter for Hydroponics Plants, Aquarium and Pool

$69.00

$ 30 .99 $30.99

5.0
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PH Meter, Digital 4-in-1 PH ORP H2 Temp Meter with ATC, H2 Water PPB/PPM Meter, 0.01 Resolution High Accuracy PH Tester for Drinking Water

$27.29

$ 13 .99 $13.99

4.4
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VIVOSUN Digital pH and TDS Meter Kits and Soil Tester, 3-in-1 Plant Moisture Meter Light and PH Tester for Home, Garden, Lawn, Farm, Indoor and Outdoor Use, Promote Plants Healthy Growth

$26.59

$ 12 .99 $12.99

4.8
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Displaying 41 to 60 (of 691 products)