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Displaying 81 to 100 (of 956 products)

Apera Instruments, LLC-AI501 PH700 Benchtop Lab pH Meter, 0.01 pH Accuracy, 1-3 Points Auto Calibration, 3-in-1 pH/Temp. Electrode

$227.23

$ 98 .99 $98.99

4.8
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1 Set Splendid Popular General Hydroponics pH Test Kit Indicator Tester Up and Down Control Accurate Results Volume 30ml

$12.99

$ 6 .99 $6.99

5.0
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3FW Food Detector Nitrate Tester for Fish Fruit Vegetable Meat,TDS Water Tester for Home Health-White

$99.99

$ 44 .99 $44.99

4.3
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3-in-1 Waterproof Multifunction Digital Meter, Measures Electrical Conductivity (EC), pH and Temperature Functions Specially Designed for Hydroponic Systems

$35.00

$ 17 .99 $17.99

4.5
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HM Digital PH-200 Waterproof pH Meter, 0-14.00 pH Range, 0.01 pH Resolution, +/- 0.02 pH Readout Accuracy

$61.90

$ 25 .99 $25.99

4.5
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Hydrogen Water Tester, GIDIGI Hydrogen Tester, Digital Hydrogen Tester for Water, ORP Tester,pH Meter High Accuracy Hydrogen Tester for Drinking Water Swimming Pool Hydroponics Aquariums

$29.88

$ 15 .99 $15.99

4.7
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PH Meter TDS Meter 8 in 1 Digital Water Tester Pool Salt Tester Salinity, PH, TDS, EC, ORP, H2 and TDS Meter, PH Meter for Water with LCD Backlit Testing Kits for Swimming Pool,Saltwater, Sea Water

$35.99

$ 15 .99 $15.99

5.0
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meross PH Meter, Digital PH Meter for Water Hydroponics with ATC, IP67 PH/Temp 2 in 1 Tester Pen, 0.01PH High Accuracy Mini Pen for Pool, Drinking Water

$4.99

$ 1 .99 $1.99

4.5
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Hanna Instruments HI98103 Checker pH Tester with Replaceable Electrode for Plant Germination

$41.50

$ 20 .99 $20.99

4.3
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Hydrogen Water Tester 4 in 1 PH,H2,ORP&Temp,pH Meter ORP Meter Hydrogen Tester for Water with ATC & Backlight,Accurate Hydrogen Water ppb/ppm Meter,Water Testing Kits for Drinking Water Quality

$40.99

$ 19 .99 $19.99

4.6
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Oakton pHTestr 30 Waterproof pH Testr 30 Pocket Tester

$143.22

$ 70 .99 $70.99

4.9
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5 in 1 pH and TDS Meter, Digital pH Tester for Water, pH/TDS/EC/Salinity/Temp, PPM Meter Water Tester for Household Drinking, Pool and Aquarium, with ATC, 0.01 Resolution

$25.88

$ 11 .99 $11.99

4.4
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GoSpectro Smartphone Portable Spectrometer

$109.00

$ 51 .99 $51.99

5.0
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51215901 51228001 51228101 51238501 Change/Tractor/Idle Gear Compatible with OKI Okidata ML320 ML321 ML390 ML391 ML420 ML421 ML490 ML491 ML520 ML521 ML590 ML591

$3.45

$ 0 .99 $0.99

4.5
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Gain Express Pocket Diffraction Grating Gemological Spectroscope for Quick Gemstone Identification and GIA Use

$33.99

$ 16 .99 $16.99

4.8
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Diffraction Grating Single Slit Grate 10um Optical Slit Micron Level Spectrometer Slit Optical Research

$148.45

$ 59 .99 $59.99

4.7
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Digital Lux Meter HS1010 Handheld Light Meter Digital Electric Illuminometer for Home Office Photometer Tester Light Measure Tool Hygrometer Spectrometer

$21.81

$ 10 .99 $10.99

4.5
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Ade Advanced Optics Pocket Diffraction Grating Gemological Spectroscope

$32.99

$ 14 .99 $14.99

4.5
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BALAX Handheld Pocket Diffraction Spectroscope for Quick Gemstone Identification

$6.58

$ 2 .99 $2.99

4.7
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RSpec Explorer, Classroom Video Spectrometer for Gas Tube Spectrum and other Spectra

$385.75

$ 99 .00 $99.00

5.0
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Displaying 81 to 100 (of 956 products)