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  • A01, Water Quality Meters

  • PH869-2 Pen type 12cm Probe pH Temperature Digital Meter 14.00 pH Pool Aquarium Water Quality Tester

  • $49.90 Original price was: $49.90.$19.96Current price is: $19.96.
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  • C01, Water Quality Meters

  • PHM-203 Chlorine Tester, PH & Chlorine Cl2 Level Meter Tester Test Monitor Swimming Pool Spa Water monitor Quality Analysis

  • $46.90 Original price was: $46.90.$18.76Current price is: $18.76.
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  • GAIN EXPRESS, Water Quality Meters

  • PHM-205 3 in 1 pH / EC / Temperature Waterproof Meter Monitor Water Quality Tester Pen Type Acidometer Drink Water Quality Analyzer Multi-Parameter Discount

  • $35.90 Original price was: $35.90.$14.36Current price is: $14.36.
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  • K03, Water Quality Meters

  • PHM-224 PH ORP Temperature 3-in-1 Combo Meter Tester Pen Type with Automatic Temperature Compensation

  • $72.90 Original price was: $72.90.$21.87Current price is: $21.87.
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  • K03, Water Quality Meters

  • PHM-224_PH 3-in-1 ORP Redox PH Temperature Combo Meter Tester w/ EXTRA Electrode, Pen Type ATC -1999~1999mV 0.00-14.00pH 0~50°C, Water Quality Aquarium Tank Swimming Pool Lab Spa Hydroponics

  • $79.90 Original price was: $79.90.$23.97Current price is: $23.97.
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  • K03, Water Quality Meters

  • PHM-226 3-in-1 pH Temperature Conductivity EC Meter Tester Digital Pen-Type 19.99 mS/cm, Aquarium, Tank, Swimming Pool, Lab, Spa

  • $36.90 Original price was: $36.90.$14.76Current price is: $14.76.
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  • K03, Water Quality Meters

  • PHM-229 Digital Aquarium pH Monitor Meter Tester with Replaceable Electrode, Continuous Monitoring Fish Tank, Aquaculture and Hydroponics

  • $43.90 Original price was: $43.90.$17.56Current price is: $17.56.
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  • K03, Water Quality Meters

  • PHM-230 Digital Online pH & Temperature Continuous Monitor Meter, Water Quality Monitoring Tester for Aquarium Swimming Pool Tank Hydroponic Pond Spa

  • $54.90 Original price was: $54.90.$16.47Current price is: $16.47.
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  • K03, Water Quality Meters

  • PHM-234 3-in-1 pH, EC & TDS Conductivity Monitor ATC w/ 3.5″ Large Dual Display, Water Quality Meter Tester for Aquaculture, Aquarium, Pond, Hydroponics

  • $92.90 Original price was: $92.90.$27.87Current price is: $27.87.
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  • K03, Water Quality Meters

  • PHM-237 Economical pH Pocket Meter Tester Size with Clip, High Accuracy Removable Probe Electrode, Laboratory, School, Aquarium Online now

  • $32.90 Original price was: $32.90.$13.16Current price is: $13.16.
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  • K03, Water Quality Meters

  • PHM-245 PH & Temperature 2-in-1 Continuous Monitor Meter w/ Backlight Replaceable Electrode, Dual Display 0.00~14.00pH °C/ °F Water Quality Monitoring Kit, for Aquariums Hydroponics Pools Tanks Spa

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  • A01, Water Quality Meters

  • PHM-295 2-in-1 Combo pH & Temperature Meter Fish Tank Monitor Thermometer Replaceable BNC pH Electrode for Aquariums Hydroponics Aquaculture Laboratory

  • Select options This product has multiple variants. The options may be chosen on the product page