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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4197 products

Palintest Soil Potassium Refill Pack
Palintest
Palintest Soil Potassium Refill Pack Sale price£100.00
Palintest Soil Phosphorous Refill Pack (v)
Palintest
Palintest Soil Phosphorous Refill Pack (v) Sale price£90.00
Save £3.75
Hanna Instruments-HI-780 Marine pH Checker Saltwater ColorimeterHanna Instruments-HI-780 Marine pH Checker Saltwater Colorimeter
Hanna Instruments
Hanna Instruments-HI-780 Marine pH Checker Saltwater Colorimeter Sale price£71.35 Regular price£75.10
Save £4.53
Hanna Instruments-98304 DiST4 EC Tester
Hanna Instruments
Hanna Instruments-98304 DiST4 EC Tester Sale price£86.17 Regular price£90.70
Save £38.76
Hanna NITRATE PORTABLE PHOTOMETER KIT
Hanna Instruments
Hanna NITRATE PORTABLE PHOTOMETER KIT Sale price£736.54 Regular price£775.30
Save £12.99
Palintest Replacement Sensor, TDS, Pocket Meter
Palintest
Palintest Replacement Sensor, TDS, Pocket Meter Sale price£73.61 Regular price£86.60
Palintest QAC (Quatest) Pocket KitPalintest QAC (Quatest) Pocket Kit
Palintest
Palintest QAC (Quatest) Pocket Kit Sale price£36.00
Save £14.05
Palintest Contour Comparator Nitrocol Nitrite, 0-0.4mg/L NPalintest Contour Comparator Nitrocol Nitrite, 0-0.4mg/L N
Palintest
Palintest Contour Comparator Nitrocol Nitrite, 0-0.4mg/L N Sale price£79.65 Regular price£93.70
Save £10.24
Hanna pH electrode, gel electrolyte; Use for general purpose, DIN connector
Hanna Instruments
Hanna pH electrode, gel electrolyte; Use for general purpose, DIN connector Sale price£194.56 Regular price£204.80
Nitrate/Nitrite Nitrogen, btl 50Nitrate/Nitrite Nitrogen, btl 50
ITS
Nitrate/Nitrite Nitrogen, btl 50 Sale price£16.49
eXact Micro 20 w/ Bluetooth Freshwater Aquarium Test KiteXact Micro 20 w/ Bluetooth Freshwater Aquarium Test Kit
ITS
eXact Micro 20 w/ Bluetooth Freshwater Aquarium Test Kit Sale price£509.69
La Motte Insta-Test Ammonia Strips
Lamotte
La Motte Insta-Test Ammonia Strips Sale price£25.92
Save £6.61
Lovibond DPD No 1 Free Chlorine Liquid Reagent B Pack
Lovibond
Lovibond DPD No 1 Free Chlorine Liquid Reagent B Pack Sale price£44.25 Regular price£50.86
Iron II L.R.TabletsIron II L.R.Tablets
Lovibond
Iron II L.R.Tablets Sale price£33.25
Save £1.98
Lovibond KS145-H-TH4-CH3-Hardness HR Titrant
Lovibond
Lovibond KS145-H-TH4-CH3-Hardness HR Titrant Sale price£13.26 Regular price£15.24
Trace2o
Combined Consumables Pack for As (Total) Trace2o Sale priceFrom £94.76
Trace2o
Combined Consumables Pack for Sb Trace2o Sale priceFrom £92.00
Trace2o
Combined Consumables Pack for Ti Trace2o Sale priceFrom £175.10
Trace2o
Combined Consumables Pack for Se Trace2o Sale priceFrom £94.76
Trace2o
Combined Consumables Pack for Au Trace2o Sale priceFrom £94.76
Trace2o
Combined Consumables Pack for Co Trace2o Sale priceFrom £94.76
Trace2o
Combined Consumables Pack for Bi Trace2o Sale priceFrom £94.76
Save £37.14
Hanna Instruments-83326 Multiparameter photometer, 11 parameters for pool & spa
Hanna Instruments
Hanna Instruments-83326 Multiparameter photometer, 11 parameters for pool & spa Sale price£705.66 Regular price£742.80
Save £40.46
Hanna Instruments-981914 Portable pH meter with memory
Hanna Instruments
Hanna Instruments-981914 Portable pH meter with memory Sale price£768.74 Regular price£809.20

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