Best Selling Products

Our Best Selling Products category features the most popular and trusted water testing solutions chosen by professionals and everyday users alike. From quick and easy test kits to advanced meters and reagents, these products have earned their place as customer favourites for their reliability, accuracy, and ease of use. Whether you’re testing pool water, drinking water, or industrial systems, these top picks deliver the dependable results you can count on.

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4196 products

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Hanna Instruments-7061M General Electrode Cleaning Solution, 230 mL bottle
Hanna Instruments
Hanna Instruments-7061M General Electrode Cleaning Solution, 230 mL bottle Sale price£29.36 Regular price£30.90
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Hanna Instruments-7010M pH 10.01 Buffer Solution, 230 ml bottle
Hanna Instruments
Hanna Instruments-7010M pH 10.01 Buffer Solution, 230 ml bottle Sale price£30.78 Regular price£32.40
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A bottle of Hanna Instruments-7061L General Purpose Electrode Cleaning Solution, 500mL.
Hanna Instruments
Hanna Instruments-7061L General Purpose Electrode Cleaning Solution, 500mL Sale price£33.25 Regular price£35.00
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Hanna Instruments-7040L Zero Oxygen Solution
Hanna Instruments
Hanna Instruments-7040L Zero Oxygen Solution Sale price£39.14 Regular price£41.20
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Hanna Instruments-7007M pH 7.01 buffer solution 230ml
Hanna Instruments
Hanna Instruments-7007M pH 7.01 buffer solution 230ml Sale price£30.78 Regular price£32.40
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Hanna Instruments-7010L pH 10.01 Buffer Solution, 500 mL bottle
Hanna Instruments
Hanna Instruments-7010L pH 10.01 Buffer Solution, 500 mL bottle Sale price£31.73 Regular price£33.40
Hanna Instruments-5521-02 Research Grade pH/ORP/EC/TDS/Resistivity/Salinity Bench Meter
Hanna Instruments
Hanna Instruments-5521-02 Research Grade pH/ORP/EC/TDS/Resistivity/Salinity Bench Meter Sale price£1,095.13
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Hanna Instruments-3822 Sulphite test kit
Hanna Instruments
Hanna Instruments-3822 Sulphite test kit Sale price£107.92 Regular price£113.60
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Hanna Instruments-3820 Acidity Test Kit
Hanna Instruments
Hanna Instruments-3820 Acidity Test Kit Sale price£59.95 Regular price£63.10
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Hanna Instruments-3833-050 Replacement reagents for Phosphate
Hanna Instruments
Hanna Instruments-3833-050 Replacement reagents for Phosphate Sale price£17.86 Regular price£18.80
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Hanna Instruments-3827 Boiler feedwater test kit for 6 parameters
Hanna Instruments
Hanna Instruments-3827 Boiler feedwater test kit for 6 parameters Sale price£358.91 Regular price£377.80
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Hanna Instruments-3841 Hardness - Range (40-500 mg/L)
Hanna Instruments
Hanna Instruments-3841 Hardness - Range (40-500 mg/L) Sale price£12.45 Regular price£13.10
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Hanna Instruments-4102 Bromide Combination ISE Electrode
Hanna Instruments
Hanna Instruments-4102 Bromide Combination ISE Electrode Sale price£940.41 Regular price£989.90
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Hanna Instruments HI-98319 Waterproof Salinity TesterHanna Instruments HI-98319 Waterproof Salinity Tester
Hanna Instruments
Hanna Instruments HI-98319 Waterproof Salinity Tester Sale price£85.79 Regular price£90.30
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Hanna Instruments-180 Compact Magnetic Mini Stirrer, 1L, Black
Hanna Instruments
Hanna Instruments-180 Compact Magnetic Mini Stirrer, 1L, Black Sale price£134.14 Regular price£141.20
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eXact LEADQuick Water Reagent Set
ITS
eXact LEADQuick Water Reagent Set Sale price£69.79
Eutech 1000 ppm 442 Calibration Solution
Eutech
Eutech 1000 ppm 442 Calibration Solution Sale price£26.87
Eutech 300 ppm 442 Calibration Solution
Eutech
Eutech 300 ppm 442 Calibration Solution Sale price£26.87
Eutech PC 450 Meter Kit, pH/mV, Conductivity, TDS, Salinity, Temperature.
Eutech
Eutech PC 450 Meter Kit, pH/mV, Conductivity, TDS, Salinity, Temperature. Sale price£885.06
Eutech Salt 6+ Salinity MeterEutech Salt 6+ Salinity Meter
Eutech
Eutech Salt 6+ Salinity Meter Sale price£438.08
Eutech Conductivity Standard Solution (480 ml)Eutech Conductivity Standard Solution (480 ml)
Eutech
Eutech Conductivity Standard Solution (480 ml) Sale price£17.55
DTK-TAW
ETI Legionnaires' Thermometer Kit Sale price£224.29
Eutech Electrode Storage Solution 480ml
Eutech
Eutech Electrode Storage Solution 480ml Sale price£17.96
DTK 2017-SD Meter - c/w pH, Cond'y, ATC Probes & Buffers
DTK-TAW
DTK 2017-SD Meter - c/w pH, Cond'y, ATC Probes & Buffers Sale price£941.51

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