pH Meters & Water Quality Testers

High quality pH meters and water quality testers including soil pH meters, meat pH meters, electronic pH meters and others suitable for use in both home-based applications such as swimming pools and in laboratory testing.

Find out more about pH Meters & Water Quality Testers below.

Hanna Instruments HI-98103 Pocket Checker pH Tester
Hanna Instruments HI-98103 Pocket Checker pH Tester
£67.50
£81.00 inc. vat
  • 0.01 pH resolution
  • Thin long-reach pH electrode included as standard
  • Two-point calibration
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Hanna Instruments Ammonia Checker
Hanna Instruments Ammonia Checker
£72.00
£86.40 inc. vat
  • Small, palm-sized design
  • Auto Power Off
  • Low, Medium, and High range options
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Hanna Instruments Chlorine Handheld Colourimeter Checker HC
Hanna Instruments Chlorine Handheld Colourimeter Checker HC
£72.00
£86.40 inc. vat
  • Quick and easy testing
  • High precision results
  • Auto shut-off
  • Free or Total chlorine options
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Hanna Instruments HI-98107 pHep pH Tester
Hanna Instruments HI-98107 pHep pH Tester
£76.00
£91.20 inc. vat
  • Renewable junction
  • Easy 1 or 2 point automatic calibration
  • 1000 hour battery life
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Hanna Instruments HI-98318 GroLine Waterproof EC/TDS (ppm) Tester
Hanna Instruments HI-98318 GroLine Waterproof EC/TDS (ppm) Tester
£77.50
£93.00 inc. vat
  • Waterproof
  • Graphite sensors
  • 250-hour battery life
  • Easy two-button operation
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Hanna Instruments HI-98108 Pocket pHep+ pH Tester
Hanna Instruments HI-98108 Pocket pHep+ pH Tester
£79.50
£95.40 inc. vat
  • Renewable junction
  • Easy 1 or 2 point automatic calibration
  • 1000 hour battery life
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Hanna Instruments HI-753 Chloride Handheld Colourimeter, Checker HC
Hanna Instruments HI-753 Chloride Handheld Colourimeter, Checker HC
£86.50
£103.80 inc. vat
  • Small palm-sized design
  • Auto Power Off
  • Built-in timer
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Hanna Instruments HI-735 Total Hardness Low Range Checker
Hanna Instruments HI-735 Total Hardness Low Range Checker
£86.50
£103.80 inc. vat
  • Large LCD
  • Single button operation
  • Auto shut-off function
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Hanna Instruments HI-981038 Bread and Dough pH Tester
Hanna Instruments HI-981038 Bread and Dough pH Tester
£143.00
£171.60 inc. vat
  • Specialised Glass Formulation
  • Open Junction Reference
  • Polyvinylidene Fluoride (PVDF) Body
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Hanna Instruments Pocket Water Resistant pH Tester
Hanna Instruments Pocket Water Resistant pH Tester
£149.00
£178.80 inc. vat
  • Automatic buffer recognition and calibration
  • Robust, replaceable electrodes
  • Two models available
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Hanna Instruments HI-9810302 HALO2 Wireless Soil pH Tester
Hanna Instruments HI-9810302 HALO2 Wireless Soil pH Tester
£168.00
£201.60 inc. vat
  • Bluetooth versatility (10m range)
  • One button sample tagging
  • Easy calibration
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Hanna Instruments Pocket EC/TDS and pH Tester
Hanna Instruments Pocket EC/TDS and pH Tester
£237.00
£284.40 inc. vat
  • Low or High Range tester options
  • Rubberised keyboard
  • HOLD function
  • Automatic shut-off
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Hanna Instruments HI-9812-51 pH EC TDS Portable Temperature Meter
Hanna Instruments HI-9812-51 pH EC TDS Portable Temperature Meter
£304.50
£365.40 inc. vat
  • 4-in-1 Measurement
  • Multiparameter probe included
  • Amplified pH electrode
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Hanna Instruments EC/TDS/Temperature Meter
Hanna Instruments EC/TDS/Temperature Meter
£304.50
£365.40 inc. vat
  • Amperometric probe technology
  • Selectable temperature unit (°C/°F)
  • Low or High Range models
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Hanna Instruments HI-2210-02 pH Benchtop Meter
Hanna Instruments HI-2210-02 pH Benchtop Meter
£352.00
£422.40 inc. vat
  • Displays pH & temperature
  • Calibration expiration reminder
  • Automatic temperature compensation
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Hanna Instruments HI-97790 Free and Total Chlorine Photometer
Hanna Instruments HI-97790 Free and Total Chlorine Photometer
£500.00
£600.00 inc. vat
  • Single-sample measurement
  • Kit option available
  • Auto data logging
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Hanna Instruments HI-97713 Portable Phosphate Photometer, Low Range
Hanna Instruments HI-97713 Portable Phosphate Photometer, Low Range
£507.50
£609.00 inc. vat
  • CAL Check
  • Auto logging
  • GLP
  • Optional kit available
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Hanna Instruments HI-97721 Portable Iron Photometer, High Range
Hanna Instruments HI-97721 Portable Iron Photometer, High Range
£507.50
£609.00 inc. vat
  • Range: 0.00 to 5.00 mg/L (as Fe)
  • Advanced LED optical system
  • CAL Check
  • Optional kit available
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Hanna Instruments HI-97728 Portable Nitrate Photometer
Hanna Instruments HI-97728 Portable Nitrate Photometer
£507.50
£609.00 inc. vat
  • On-Screen Tutorial Mode
  • Auto Shut-Off
  • Battery Status Indicator
  • Built-in Timer
  • Optional kit available
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Hanna Instruments HI-97733 Portable Ammonia Photometer, High Range
Hanna Instruments HI-97733 Portable Ammonia Photometer, High Range
£507.50
£609.00 inc. vat
  • Intuitive Display
  • Kit option available
  • Advanced Optical System
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Hanna Instruments HI-2002-02 Edge pH Meter
Hanna Instruments HI-2002-02 Edge pH Meter
£529.00
£634.80 inc. vat
  • pH, mV, pH and ORP reading modes
  • Capacitive touch keys
  • GLP data
  • Basic and advanced modes
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Hanna Instruments HI-3512-02 pH/EC/TDS Bench Meter
Hanna Instruments HI-3512-02 pH/EC/TDS Bench Meter
£558.50
£670.20 inc. vat
  • pH and EC Probes
  • Automatic Temperature Compensation
  • PC interface via USB
  • Log up to 400 samples
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Hanna Instruments HI-2020-02 Edge Hybrid Multiparameter pH, EC, DO Meter
Hanna Instruments HI-2020-02 Edge Hybrid Multiparameter pH, EC, DO Meter
£612.00
£734.40 inc. vat
  • Range: -2.00 to 16.00 pH
  • pH, Dissolved Oxygen, EC
  • 5 calibration points
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Hanna Instruments HI-99164 Portable pH/Temperature Meter for Yoghurt Analysis
Hanna Instruments HI-99164 Portable pH/Temperature Meter for Yoghurt Analysis
£636.50
£763.80 inc. vat
  • Application-specific electrode
  • Automatic temperature compensation
  • Stability indicator
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About pH Meters & Water Quality Testers

Perfect for use both in educational, industrial, and scientific environments, a pH/water quality tester is the ideal solution for accurately measuring the pH of substances or ensuring that water is safe for consumption.

Of course, pH testers aren't just for use in substances - many devices are also used to test the pH of food, or for evaluating the levels of acid/alkali inside semi-solid or solid materials. Soil pH meters are also commonly used in food production to ensure that soils are at the right levels for increasing maximum yield when growing crops, plants, or vegetation.

If you're regularly testing for different PHs, having an accurate, easy-to-read tester ensures that you can always maintain accurate readings of potentially dangerous substances. A PH tester is also ideal for use in schools, providing a more accurate alternative to using litmus paper in the science lab.

Most common pH meters work by the use of an electrode. When inserted into the target substance this electrode will create a current through that substance; the pH meter will then read this current, and display the overall acidity/alkalinity of the substance on the tester's screen. Proper maintenance of a pH electrode is essential in between testing procedures - they should be cleaned carefully, and kept stored in a regularly changed solution of a specific pH to maintain the efficiency of the pH electrode. Without proper care, the electrode will deteriorate much faster and will have to be replaced much more regularly.

It's also quite common for pH meters to be able to evaluate the overall temperature of the object/solution being tested at the same time as pH readings are being calculated. This is particularly useful when testing foodstuffs such as meat; these meat pH meters and other food meters can be used to accurately determine the pH of stored/cooked food, and are ideal for use everywhere from restaurants to supermarket refrigeration storage areas.

Got a swimming pool or a hot tub at home? pH meters are great tools for evaluating the delicate chemical balance used in these devices, and allow users to easily maintain and adjust the chemical balance as and when needed.

Generally, PH meters range in size, shape, and ability. For those on a budget, pen-sized PH meters are available, while we also stock a range of higher-priced PH meters which are more suited for technical environments such as laboratories. More expensive devices generally come with additional features such as temperature compensators; readings can be affected by temperature.

Water quality testers check to see if water is safe for consumption or human touch. These are essential for those who work regularly with both water and chemicals, allowing you, for example, to check that the correct levels of chlorine are present in water before it is sent out for use in homes and other areas.