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1. Professional pH Meter Pen Type Water Quality Tester Acidometer PH Acidity Meter for Aquarium

   Professional pH Meter Pen Type Water Quality Tester Acidometer PH Acidity Meter for Aquarium

   Aliexpress UK

2. Hydroponics pH Pen Digital Meter Tester Stick Nutrient Management Indoor Growing

   Helping the grower calculate the best optimum level to maximise the growth and yield of their crop. Quick Links.

   eBay

3. PH Food PH Meter Detector PH-012 PH Meter Backlight LCD Digital Water Quality Tester Pen Temperature

   PH Food PH Meter Detector PH-012 PH Meter Backlight LCD Digital Water Quality Tester Pen Temperature

   Aliexpress UK

4. Milwaukee pH51 Waterproof pH Tester – Accurate & Durable Hydroponic pH Meter

   eBay

5. Blue-tooth Digital 7 in 1 pH Meter PH/TDS/EC/ORP/Salinity /SG/TEMP Meter Water Quality Monitor

   Blue-tooth Digital 7 in 1 pH Meter PH/TDS/EC/ORP/Salinity /SG/TEMP Meter Water Quality Monitor

   Aliexpress UK

6. Essentials pH Pen Digital Meter Tester Stick Management Hydroponics

   Low battery indicator. Built in energy saving mode.

   eBay

7. TDS Meter 0-9990ppm Digital PH Meter 0.01 PH High Precision Pen Water Tester TDS&PH Meter 0-14 PH

   TDS Meter 0-9990ppm Digital PH Meter 0.01 PH High Precision Pen Water Tester TDS&PH Meter 0-14 PH

   Aliexpress UK

8. PLANT!T Plant It pH Pen Digital Meter Tester Nutrient Management Hydroponics

   Small and lightweight, it is ideal for any growroom.

   eBay

9. TDS Meter 0-9990ppm Digital PH Meter 0.01 PH High Precision Pen Water Tester TDS&PH Meter 0-14 PH

   TDS Meter 0-9990ppm Digital PH Meter 0.01 PH High Precision Pen Water Tester TDS&PH Meter 0-14 PH

   Aliexpress UK

10. PH Meter LCD Digital Electric Tester Pen Water Hydroponics Test Kit Aquarium

    Accuracy: ±0.2PH; ±0.1PH (20°C). Resolution: 0.1PH. Portable Design:Handheld pen style and compact carrying case makes it conveniently fits in your pocket or bag and goes anywhere. Display: LCD Digital.

    eBay

11. Portable PH Value Test Pen Aquarium PH Tester PH Meter Water Accurate Digital PH Meter Pen 0-14

    Portable PH Value Test Pen Aquarium PH Tester PH Meter Water Accurate Digital PH Meter Pen 0-14

    Aliexpress UK

12. PH Meter LCD Digital Electric Hydroponics Aquarium Water Tester Pen Test Kit Uk

    Featuring an easy-to-read LCD display, it provides quick and accurate readings from 0 to 14 pH. Type: PH Tester. Accuracy: ±0.2PH; ±0.1PH (20°C). Resolution: 0.1PH. Portable Design: Lightweight and compact, ideal for lab use or fieldwork.

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13. High Quality Online Industrial Ph Meter Digital Ph Meter Ph Electrode Probe Liquid Tester

    High Quality Online Industrial Ph Meter Digital Ph Meter Ph Electrode Probe Liquid Tester

    Aliexpress UK

14. 7 in 1 LCD Backlight Water Quality Tester Meter for PH/ORP/EC/TEMP/SALT/S.G/TDS

    ORP negative potential ±1999MV. Salinity 0-20%. The specific gravity of S.G seawater is 1.000-1.222. 2, TDS value 0-200000ppm. H2 hydrogen rich 0-2400PPb. EC value 0-200000㎲/cm. 1x 7 In 1 Tester Pen. PH value 0-14.

    eBay

15. ZEXEF PH Meter 0.01 For Water Quality Tester With Measurement Range 3 in 1 PH tester Water PH Meter

    ZEXEF PH Meter 0.01 For Water Quality Tester With Measurement Range 3 in 1 PH tester Water PH Meter

    Aliexpress UK

16. 4 in1 LCD Digital Soil PH Meter Tester Temperature Sunlight Fertility Hygrometer

    The modern orange and black plastic device is 33 cm long, with functions including temperature and humidity readings.

    eBay

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