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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4195 products

Milwaukee MA9016 Cleaning Solution for pH / ORP Electrodes
Milwaukee
Milwaukee MA9016 Cleaning Solution for pH / ORP Electrodes Sale price£16.44
DR300 Pocket Colorimeter, Chlorine, Free + Total, LR/HR, with BoxDR300 Pocket Colorimeter, Chlorine, Free + Total, LR/HR, with Box
Hach
DR300 Pocket Colorimeter, Chlorine, Free + Total, LR/HR, with Box Sale price£800.00
Test All Water Acidifying SE Tablets
DTK-TAW
Test All Water Acidifying SE Tablets Sale priceFrom £27.00
Save £18.30
Palintest/Wagtech Membrane Filtres, 0.45um, 47mm, gridded, 200 packPalintest/Wagtech Membrane Filtres, 0.45um, 47mm, gridded, 200 pack
Palintest
Palintest/Wagtech Membrane Filtres, 0.45um, 47mm, gridded, 200 pack Sale price£103.70 Regular price£122.00
HACH Iron Reagent Powder Pillows, 0.02-3.00 mg/L Fe
Hach
HACH Iron Reagent Powder Pillows, 0.02-3.00 mg/L Fe Sale price£38.11
IDEXX
IDEXX Labels Sale price£62.50
IDEXX SimPlate for HPCIDEXX SimPlate for HPC
IDEXX
IDEXX SimPlate for HPC Sale priceFrom £97.00
Check₂O Pool & Spa 3 in 1 Test StripsCheck₂O Pool & Spa 3 in 1 Test Strips
Johnson Analytica
Check₂O Pool & Spa 3 in 1 Test Strips Sale priceFrom £5.99
Save £83.22
Lovibond MD50 Suspended Solids PhotometerLovibond MD50 Suspended Solids Photometer
Lovibond
Lovibond MD50 Suspended Solids Photometer Sale price£556.94 Regular price£640.16
Save £377.55
Palintest Kemio Heavy Metals Soft Case Kit (Lead, Copper, Arsenic and Cadmium)Palintest Kemio Heavy Metals Soft Case Kit (Lead, Copper, Arsenic and Cadmium)
Palintest
Palintest Kemio Heavy Metals Soft Case Kit (Lead, Copper, Arsenic and Cadmium) Sale price£2,139.45 Regular price£2,517.00
Save £1.88
Hanna Instruments HI-715-25 Reagents for HI-715 Ammonia Medium Range Checker HC
Hanna Instruments
Hanna Instruments HI-715-25 Reagents for HI-715 Ammonia Medium Range Checker HC Sale price£35.72 Regular price£37.60
Save £291.45
Palintest Micro 800 Multiparameter
Palintest
Palintest Micro 800 Multiparameter Sale price£1,651.55 Regular price£1,943.00
eXact DPD-1 Micro Free Chlorine
ITS
eXact DPD-1 Micro Free Chlorine Sale price£12.44
Save £4.73
Palintest Phosphate SR (250F), PO₄
Palintest
Palintest Phosphate SR (250F), PO₄ Sale price£42.57 Regular price£47.30
Safe Swim Meter Reagent DPD-4 Total Chlorine
ITS
Safe Swim Meter Reagent DPD-4 Total Chlorine Sale price£13.34
PoolLab Nitrite LR Photometer Powder Pillows
WATER-I.D.
PoolLab Nitrite LR Photometer Powder Pillows Sale price£17.25
PoolLab Ammonia No.1 Powder Pillows
WATER-I.D.
PoolLab Ammonia No.1 Powder Pillows Sale priceFrom £16.95
Plastic syringe, 5ml
Lovibond
Plastic syringe, 5ml Sale price£0.53
PWTAG Swimming Pool Water Book
PWTAG Swimming Pool Water
PWTAG Swimming Pool Water Book Sale price£38.00
Lovibond Titrant A
Lovibond
Lovibond Titrant A Sale price£12.95
How to take a water sample
TEST ALL WATER
Cryptosporidium Testing in Water Sample Sale price£280.00
Palintest Hazardous COD Waste Collection
Palintest
Palintest Hazardous COD Waste Collection Sale priceFrom £525.00
Pro-Swim Chlorine/Bromine Neutraliser 2kgPro-Swim Chlorine/Bromine Neutraliser 2kg
Pro-Swim
Pro-Swim Chlorine/Bromine Neutraliser 2kg Sale price£20.09
Save £3.11
Lovibond Alkalinity P 250 Tablets
Lovibond
Lovibond Alkalinity P 250 Tablets Sale price£20.81 Regular price£23.92

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