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

Save £22.65
Palintest Tubetest Heater Cover, Standard
Palintest
Palintest Tubetest Heater Cover, Standard Sale price£128.35 Regular price£151.00
Save £10.65
Palintest Kemio Contact Pad Replacement Kit
Palintest
Palintest Kemio Contact Pad Replacement Kit Sale price£60.35 Regular price£71.00
Palintest Urea Photometer Reagents
Palintest
Palintest Urea Photometer Reagents Sale price£99.00
Save £341.70
Palintest Potatest Classic
Palintest
Palintest Potatest Classic Sale price£1,936.30 Regular price£2,278.00
IDEXX EasyDisc YEA for 1 ml sample
IDEXX
IDEXX EasyDisc YEA for 1 ml sample Sale priceFrom £97.00
Check₂O Pool & Spa PhosphateCheck₂O Pool & Spa Phosphate
Johnson Analytica
Check₂O Pool & Spa Phosphate Sale priceFrom £8.38
Check₂O Pool & Spa PeroxideCheck₂O Pool & Spa Peroxide
Johnson Analytica
Check₂O Pool & Spa Peroxide Sale priceFrom £4.35
Check₂O Pool & Spa 4 in 1 Test StripsCheck₂O Pool & Spa 4 in 1 Test Strips
Johnson Analytica
Check₂O Pool & Spa 4 in 1 Test Strips Sale priceFrom £2.32
HtH
HTH Granules Regular 25KG Sale price£165.00
Save £64.66
Lovibond MD150 (3 in 1) Chlorine, CyA & pH Photometer - Tablet ReagentsLovibond MD150 (3 in 1) Chlorine, CyA & pH Photometer - Tablet Reagents
Lovibond
Lovibond MD150 (3 in 1) Chlorine, CyA & pH Photometer - Tablet Reagents Sale price£432.76 Regular price£497.42
Save £61.00
Lovibond MD150 Chlorine & pH Photometer - Powder ReagentsLovibond MD150 Chlorine & pH Photometer - Powder Reagents
Lovibond
Lovibond MD150 Chlorine & pH Photometer - Powder Reagents Sale price£408.21 Regular price£469.21
HACH FerroZine Iron Reagent Solution Pillows, 0.009-1.400mg/L Fe
Hach
HACH FerroZine Iron Reagent Solution Pillows, 0.009-1.400mg/L Fe Sale price£49.96
Save £83.22
Lovibond MD50 Copper Photometer with Tablet ReagentsLovibond MD50 Copper Photometer with Tablet Reagents
Lovibond
Lovibond MD50 Copper Photometer with Tablet Reagents Sale price£556.94 Regular price£640.16
Save £83.22
Lovibond MD50 Chlorine Dioxide Photometer with Tablet ReagentsLovibond MD50 Chlorine Dioxide Photometer with Tablet Reagents
Lovibond
Lovibond MD50 Chlorine Dioxide Photometer with Tablet Reagents Sale price£556.94 Regular price£640.16
Save £83.22
Lovibond MD50 Chlorine Photometer with TabletsLovibond MD50 Chlorine Photometer with Tablets
Lovibond
Lovibond MD50 Chlorine Photometer with Tablets Sale price£556.94 Regular price£640.16
Lamotte Mobile WaterLink Spin Touch with carrying caseLamotte Mobile WaterLink Spin Touch with carrying case
Lamotte
Lamotte Mobile WaterLink Spin Touch with carrying case Sale price£1,415.00
Hach HQ4300 Portable Multi-Meter, pH, Conductivity, TDS, Salinity, Dissolved Oxygen (DO), ORP, and ISE, 3 channels, w/o electrodesHach HQ4300 Portable Multi-Meter, pH, Conductivity, TDS, Salinity, Dissolved Oxygen (DO), ORP, and ISE, 3 channels, w/o electrodes
Hach
Hach HQ4300 Portable Multi-Meter, pH, Conductivity, TDS, Salinity, Dissolved Oxygen (DO), ORP, and ISE, 3 channels, w/o electrodes Sale price£1,946.70
Hanna Instruments HI-7134 Phosphate Checker Expired reagentsHanna Instruments HI-7134 Phosphate Checker Expired reagents
TEST ALL WATER
Hanna Instruments HI-7134 Phosphate Checker Expired reagents Sale price£55.55
Save £0.25
Lovibond Universal Container & Cap 30mlLovibond Universal Container & Cap 30ml
Lovibond
Lovibond Universal Container & Cap 30ml Sale price£1.70 Regular price£1.95
Palintest
Palintest Silicone Oil Solution, 10mL Sale price£18.70 Regular price£22.00
Save £1.05
Hanna Instruments HI-784-25 Marine Ammonia reagent - 25 tests
Hanna Instruments
Hanna Instruments HI-784-25 Marine Ammonia reagent - 25 tests Sale price£20.05 Regular price£21.10
Save £1.33
Hanna Instruments HI-782-25 Marine High Range Nitrate Checker Reagents
Hanna Instruments
Hanna Instruments HI-782-25 Marine High Range Nitrate Checker Reagents Sale price£25.27 Regular price£26.60
Save £1.33
Hanna Instruments HI-781-25 Marine Low Range Nitrate reagents, 25 tests
Hanna Instruments
Hanna Instruments HI-781-25 Marine Low Range Nitrate reagents, 25 tests Sale price£25.27 Regular price£26.60
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Lovibond Alka-M HR Photometer TabletsLovibond Alka-M HR Photometer Tablets
Lovibond
Lovibond Alka-M HR Photometer Tablets Sale priceFrom £24.59 Regular price£28.27

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