
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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4003 products
Lovibond
Lovibond Spare Cells for Checkit
Sale priceFrom £2.90
Lovibond
Lovibond Total Hardness Tablets
Sale price£21.53
Regular price£23.61
Lovibond
Lovibond Pool Control 12 in 1 Photometer PM600
Sale price£642.36
Regular price£765.35
Lovibond
Lovibond Light Shielding Ring for round vials 24mm, set of 12
Sale price£4.96
Regular price£5.17
Lovibond
Lovibond Hydrogen Peroxide Reagent Solution
Sale price£58.52
Lovibond
Lovibond D005 TTC/E.COLI - D005 TTC/Chromogenic Dipslides (pack of 10)
Sale price£31.88
Regular price£35.13
Lovibond
Lovibond DPD No 1 Liquid Buffer Solution
Sale price£22.66
Lovibond
Lovibond Chlorine Standard set MD100, MD110, MD200
Sale price£66.64
Lovibond
Lovibond Checkit 5 in 1 Comparator Kit
Sale price£234.93
Eutech
Eutech pH 7.00 Buffer Solution - 480ml
Sale price£17.64
LaMotte
LaMotte ColorQ 2 Refill Pack
Sale price£57.00
ITS
Safe Swim Meter Reagent Total Alkalinity
Sale price£12.89
Palintest
Palintest Chlorine/pH Pooltester
Sale price£18.72
Regular price£20.80
Oasis
Oasis 1000 Water Purification Tablets
Sale priceFrom £13.21
Biospot
Biospot Effervescent Chlorine Tablets
Sale priceFrom £8.72
Hyzyme
Hyzyme Natural Septic Tank Treatment 600g
Sale priceFrom £17.75
Palintest
Palintest Lumiso Expert Check Standards
Sale price£97.83
Regular price£108.70
LaMotte
LaMotte Insta-Test Magnesium Test Strips
Sale price£17.00
DTK-TAW
TH2 - Total Hardness Buffer
Sale price£6.65
Testallwater
Test All Water Spa & Hot Tub Bromine Disinfectant Tablets
Sale priceFrom £15.96
Palintest
Palintest Nitrite (Nitriphot) Photometer Tablets
Sale priceFrom £46.17
Regular price£51.30
Palintest
Palintest Copper (Free), Photometer Reagents, 0-5 mg/L Cu
Sale price£117.72
Regular price£130.80
Palintest
Palintest Contour Comparator Kit Chlorine 0 -2 mg/l / pH
Sale price£100.89
Regular price£112.10
Lovibond
Lovibond pH Checkit Disc 6.5 - 8.4 pH
Sale price£25.18
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