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  1. pH Meter Digital LCD Tester Pen-Water-Hydroponics-Aquarium-TDS-Clean Test Kit

    Versatile Use:Perfect for testing drinking water, pools, aquariums, RO systems, spas, and hydroponics. Detailed manual for optimal use. Need Help?.

    eBay

  2. YIERYI 4 in 1 PH/TDS/EC/Temperature Meter Digital Water Quality Monitor Tester for Pools, Drinking Water, Aquariums

    YIERYI 4 in 1 PH/TDS/EC/Temperature Meter Digital Water Quality Monitor Tester for Pools, Drinking Water, Aquariums

    Aliexpress UK

  3. Portable 8-in-1 Water Quality Tester PH TDS TEMP ORP EC Salinity H2 Meter

    8-in-1 Digital Water Quality Tester Pen – PH/TDS/TEMP/ORP/EC/S. G/H₂/Salinity Monitor. ORP: ±1999 mV. Salinity: up to 20%. TDS: 0–100,000 ppm. A3: It is suitable for pool water, drinking water, seawater, aquarium water, and various industrial water sources.

    eBay

  4. 5 In 1 PH/CL2/H2/ORP/Temperature Meter Chlorine Detector Digital Water Quality Tester for Swimming Pools Drinking Water Aquarium

    5 In 1 PH/CL2/H2/ORP/Temperature Meter Chlorine Detector Digital Water Quality Tester for Swimming Pools Drinking Water Aquarium

    Aliexpress UK

  5. 2X 6-in1Chlorine Dip Test Strips Swimming Pool Water SPA Hot Tub PH Tester Paper

    Total alkalinity test range: 0~240ppm. Simply press the testing strip to the object or liquid you are testing. Half second later, take out the paper and using the color chart included, compare the color change of the paper to find out the acidity level of your testing subject.

    eBay

  6. Tuya WiFi 7in1 Water Quality Tester, multi-parameter water quality analyzer, digital display PH/ORP/EC/PPM/CF

    Tuya WiFi 7in1 Water Quality Tester, multi-parameter water quality analyzer, digital display PH/ORP/EC/PPM/CF

    Aliexpress UK

  7. 5 In 1 Digital Water Quality Tester Pen EC PH Salinity Temp Meter/Detector UK

    【HIGH ACCURACY PH TESTER】- The glass probe of this pH tester is made of low-resistance glass sensitive film, and the response speed is within 0.1 seconds. TDS electrodes are made of agile, high-quality titanium alloy with perfect corrosion resistance.

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  8. TDS Meter Digital Water Tester 0-9990ppm Drinking Water Quality Analyzer Monitor Filter Rapid Test Aquarium Hydroponics Pools

    TDS Meter Digital Water Tester 0-9990ppm Drinking Water Quality Analyzer Monitor Filter Rapid Test Aquarium Hydroponics Pools

    Aliexpress UK

  9. TDS Meter Digital Water Tester, Water Testing Kits For Drinking Water Water

    Handheld pen style makes it conveniently fits in your pocket or bag.

    eBay

  10. 10 in 1 Digital PH Meter Water Quality Tester PH/Cl₂/TDS/EC/Hardness Hydrogen-rich Detector for Drinking Water Aquariums Pools

    10 in 1 Digital PH Meter Water Quality Tester PH/Cl₂/TDS/EC/Hardness Hydrogen-rich Detector for Drinking Water Aquariums Pools

    Aliexpress UK

  11. pH Water Testing Kit (Meter LCD Digital Electric Water Tester Pen)

    Condition: New - Opened, but not used Product Name: pH Water Testing Kit (pH Meter LCD Digital Electric Water Tester Pen) Contents: 1× pH Meter LCD Digital Electric Water Tester Pen 1x PH Buffer Powder 4.01 at 25°C 1x PH Buffer Powder 6.86 at 25°C 1x PH Buffer Powder 9.18 at 25°C

    eBay

  12. TDS Meter Digital Water Tester 0-9990ppm Drinking Water Quality Analyzer Monitor Filter Rapid Test Aquarium Hydroponics Pools

    TDS Meter Digital Water Tester 0-9990ppm Drinking Water Quality Analyzer Monitor Filter Rapid Test Aquarium Hydroponics Pools

    Aliexpress UK

  13. 6-in-1Chlorine Dip Test Strips Swimming Pool Water SPA Hot Tub PH Tester Pape UK

    Total alkalinity test range: 0~240ppm. Simply press the testing strip to the object or liquid you are testing. Half second later, take out the paper and using the color chart included, compare the color change of the paper to find out the acidity level of your testing subject.

    eBay

  14. pH100 Digital Water Pen Type Portable pH Meter Tester for Water Detection

    pH100 Digital Water Pen Type Portable pH Meter Tester for Water Detection

    Aliexpress UK

  15. 7 in1 Aquarium Test Kit, Fish Tank Water Testing (50x Tester Strips) UK

    ALittleLife Aquarium 7 in1 Tester Strip. Each 7 in1 strip tests for Use weekly and when setting up a tank. Total Hardness (GH). Total Alkalinity (KH).

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  16. 6 in 1 Smart Floating Swimming Pool Water Analyzer APP Online Monitor Water Quality Test Meter BT PH CL TDS EC ORP TEMP Tester

    6 in 1 Smart Floating Swimming Pool Water Analyzer APP Online Monitor Water Quality Test Meter BT PH CL TDS EC ORP TEMP Tester

    Aliexpress UK

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