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

Lovibond
W680.OG.13mm Cell Sale price£47.51 Regular price£54.61
Lovibond
W680.OG.2.5mm Cell Sale price£47.51 Regular price£54.61
Lovibond
W585.OG.10mm Cell Sale price£42.45 Regular price£48.79
Lovibond
W680.OG.5mm Cell Sale price£40.74 Regular price£46.83
DTK-TAW
Water Hardness Test Strips [0-21?d] (100Pk) Sale price£78.71
DTK-TAW
Vario Phos 3 Pillows, 10ml Sample Sale price£65.66
VRBG** Agar; Enterobacteriaceae.
TEST ALL WATER
VRBG** Agar; Enterobacteriaceae. Sale price£11.56
Water Quality Test Kit
ITS
Water Quality Test Kit Sale price£33.20
Lovibond
Verification Standard, PoolDirect Sale price£123.28
Save £4.05
Lovibond Vario Silica HR Citric AcidLovibond Vario Silica HR Citric Acid
Lovibond
Lovibond Vario Silica HR Citric Acid Sale price£27.14 Regular price£31.19
Lovibond
User Specified Customized Disc (1-5 Std's) Sale price£1,161.59
Lovibond
Upright Stand for RT600 Sale price£955.62
Lovibond
User Specified Filter Sale price£857.00 Regular price£902.11
Lovibond
Tube Holder Base PFX195 Sale price£320.90 Regular price£337.79
Lovibond
UKAS Conformance Filter Calib. Sale price£406.00 Regular price£427.37
Lovibond
Lovibond Vacuum Formed Tray (Pack of 3) Sale price£266.42 Regular price£280.44
Lovibond
USB Power Supply Unit Sale price£40.52 Regular price£42.65
Lovibond
Tube 33mm PFX195 (ASTM color) Sale price£23.56 Regular price£24.80
Lovibond
Tube 10.65mm PFX195 (Gardner) Sale price£13.47 Regular price£14.18
Save £12.61
Vario Chlorine Free&Total 10mlVario Chlorine Free&Total 10ml
Lovibond
Vario Chlorine Free&Total 10ml Sale price£84.38 Regular price£96.99
Save £10.06
Lovibond Vario Chlorine Total 10mlLovibond Vario Chlorine Total 10ml
Lovibond
Lovibond Vario Chlorine Total 10ml Sale price£67.35 Regular price£77.41
DTK-TAW
USE TS024-50 pH Test Strips 1-14 (50Pk) Sale price£12.20
Save £13.77
Lovibond Vario Fe in Mo (TPTZ - Iron in Moly) [0.01-1.80mgl/]
Lovibond
Lovibond Vario Fe in Mo (TPTZ - Iron in Moly) [0.01-1.80mgl/] Sale price£92.18 Regular price£105.95
Save £5.93
Lovibond Vario Fe in Mo Reagent 2 (100Pk)
Lovibond
Lovibond Vario Fe in Mo Reagent 2 (100Pk) Sale price£39.69 Regular price£45.62

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