pH Meters & Water Quality Testers

2 In Stock

Extech EC150 Conductivity / TDS / Temperature Meter

(1)

£68.40 £57.00
- Triple function meter measures conductivity, TDS and temperature
- Fully waterproof with IP65 rating
- Simultaneous measurements of conductivity or TDS + temperature
57 Reward Points

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EC150

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In Stock

Extech EC170 Salinity/Temperature Meter

(no reviews)

£69.60 £58.00
- Dual measurements of salinity and temperature
- Autoranging with 2 ranges of measurement
- Waterproof design meets IP65 standards
58 Reward Points

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EC170

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Extech PH90 Waterproof pH and Temperature Meter

(no reviews)

£82.20 £68.50
- Measures pH and temperature levels simultaneously
- Use with liquids, semi-solids and solids
- High quality non-glass electrode resists breaking and clogging
68 Reward Points

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PH90

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Extech PH100 ExStik pH Meter

(3)

£102.00 £85.00
- Comes with pH electrode, meter, sensor caps, sample cups and batteries
- Built-in smart chip for advanced functions
- RENEW feature tells you when to get a new electrode
85 Reward Points

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PH100

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4 In Stock

Extech PH110 ExStik Refillable pH Meter

(no reviews)

£106.80 £89.00
- Unique device with refillable electrode
- No need to worry about shelf life
- Usable with one hand
89 Reward Points

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PH110

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Extech EC400 ExStik II Conductivity, TDS & Salinity Meter

(1)

£106.80 £89.00
- Measures TDS, conductivity, salinity and temperature
- Automatic Temperature Compensation of 2%
- Stores up to 25 readings
89 Reward Points

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EC400

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Only 1 In Stock

Extech RE300 ExStik ORP Meter

(no reviews)

£109.91 £91.59
- Takes pH measurements up to two decimal places
- Analog bar graph displays pH levels
- Smart Chip technology
91 Reward Points

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RE300

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2 In Stock

Extech PH220-C Waterproof Palm pH Meter Kit

(2)

£150.00 £125.00
- Totally waterproof unit
- Ultra-portable
- Comes with pH electrode, holster, battery and pH buffers
125 Reward Points

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PH220-C

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5 In Stock

Extech EC500 ExStik II Waterproof pH/Conductivity Meter

(1)

£154.80 £129.00
- Capable of storing 25 readings
- Provides graphical data on the LCD display
- Lightweight and portable, use enhanced with EC510 kit (not included)
129 Reward Points

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EC500

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Extech Oyster-15 Oyster Series pH/mV/Temperature Meter Kit

(no reviews)

£184.68 £153.90
- Comes with Oyster-10 meter, electrodes and calibration buffers
- Splash-proof housing on meter
- Features audible beeper and min/max recall
153 Reward Points

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Oyster-15

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Extech EX800 3 in 1 Chlorine pH Temperature Kit

(no reviews)

£189.60 £158.00
- Comes in a handy, solid, portable case
- Features a CL200 meter and pH electrode
- Electrodes work in liquids, semi-solids and solids
158 Reward Points

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EX800

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Extech CL200 ExStik Waterproof Chlorine Meter

(no reviews)

£190.80 £159.00
- Total chlorine measurements
- Unaffected by sample colour and turbidity
- Can store up to 15 measurements
159 Reward Points

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CL200

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Extech EC510 Waterproof ExStik II pH/Conductivity Meter Kit

(no reviews)

£213.60 £178.00
- RENEW feature which alerts users to replace electrode
- Nine units of measurement
- 25 labelled readings memory
178 Reward Points

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EC510

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Only 1 In Stock

Extech EX900 ExStik 4-in-1 Chlorine pH, ORP & Temperature Kit

(1)

£214.80 £179.00
- Comes with CL200 meter, electrodes and more
- Four-in-one water quality meter
- Flat surface electrodes for testing in liquids, semi-solids and solids
179 Reward Points

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EX900

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Extech PH300 Waterproof pH/mV/Temperature Kit

(1)

£244.80 £204.00
- Automatic temperature compensation included
- Measures pH, mV and temperature
- Waterproof casing
204 Reward Points

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PH300

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Only 1 In Stock

Extech DO600 Waterproof ExStik II Dissolved Oxygen Meter

(no reviews)

£287.40 £239.50
- Displays oxygen levels as both saturation and concentration
- Analogue bar graph and digital display
- Self-calibrating
239 Reward Points

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DO600

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Free UK Delivery

Extech DO600-K Waterproof ExStik II Dissolved Oxygen Meter Kit

(no reviews)

£430.80 £359.00
- Multiple variations of dissolved oxygen measurements
- Large digital display with analogue bar graph
- Plenty of extras!
359 Reward Points

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DO600-K

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Free UK Delivery

Extech SDL150 Dissolved Oxygen Meter/Datalogger

(no reviews)

£442.80 £369.00
- Dual backlit display
- Supplied SD card
- Dissolved oxygen testing from 0 to 20mg/L
369 Reward Points

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SDL150

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Only 1 In Stock

Free UK Delivery

Extech EC600 Waterproof Conductivity Kit

(no reviews)

£444.00 £370.00
- Takes six different measurements
- Microprocessor calibrates automatically
- Stores up to 300 measurements
370 Reward Points

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EC600

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Lead Time: 1-2 Weeks

Free UK Delivery

Extech 407510 Heavy Duty Dissolved Oxygen Meter

(no reviews)

£462.00 £385.00
- Measure dissolved oxygen with ease
- Measures temperatures
- RS-232 interface allows you to interact with test data on PC
385 Reward Points

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407510

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5 In Stock

Free UK Delivery

Extech TB400 Portable Turbidity Meter

(no reviews)

£574.80 £479.00
- Measures the turbidity of a liquid sample
- Range up to 1000NTU
- Battery powered - can be used on-site
479 Reward Points

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TB400

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Lead Time: 2-3 Weeks

Free UK Delivery

Extech DO700 Portable Dissolved Oxygen Meter

(1)

£742.80 £619.00
- Meets IP57 standards
- Measures concentration, saturation, PH, mV, conductivity and more
- Large, dual LCD display
619 Reward Points

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DO700

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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.