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

PoolLab Nitrate No.2 Photometer Powder Pillows
WATER-I.D.
PoolLab Nitrate No.2 Photometer Powder Pillows Sale price£60.43
PoolLab Nitrate No.1 Photometer Powder Pillows
WATER-I.D.
PoolLab Nitrate No.1 Photometer Powder Pillows Sale priceFrom £60.43
Save £2.77
Lovibond Pooltester Chlorine LR/pH in cartonLovibond Pooltester Chlorine LR/pH in carton
Lovibond
Lovibond Pooltester Chlorine LR/pH in carton Sale price£18.55 Regular price£21.32
Save £1.35
Palintest Pooltester Refil Pack 60BPalintest Pooltester Refil Pack 60B
Palintest
Palintest Pooltester Refil Pack 60B Sale price£7.65 Regular price£9.00
PrimeLab 2.0 Activation Codes
WATER-I.D.
PrimeLab 2.0 Activation Codes Sale priceFrom £20.00
General Purpose Plastic-body Double Junction Gel-Filled pH Combination Electrode
Test All Water
General Purpose Plastic-body Double Junction Gel-Filled pH Combination Electrode Sale price£59.54
Save £3.72
Lovibond Pooltester Bromine/pHLovibond Pooltester Bromine/pH
Lovibond
Lovibond Pooltester Bromine/pH Sale price£24.93 Regular price£28.65
Test All Water
Trace2o Potassium Photometer Reagents, - 100 tests Sale price£75.83
Test All Water
Trace2o Alkalinity-M (HR) Photometer Reagents, - 100 tests Sale price£85.00
Test All Water
HACH Sample cells 1 inch round glass 10ml p/k 6 Sale price£110.00
LaMotte Insta Test QAC Test Strips
LaMotte
LaMotte Insta Test QAC Test Strips Sale price£11.03
Hach
HACH Reagent Set Chromium Sale price£345.05
Hach
HACH Reagent set, copper, free & total Sale price£149.35
Hach
HACH TOTAL IRON - FerroMo reagent set Sale price£239.78
Hach
HACH Reagent Set Nitrate/Nitrogen LR Sale price£175.10
Test All Water
Palintest Nitrite No. 2, 250 Bottle Pack Sale price£145.20
Pro-Swim Floc Granules 2kgPro-Swim Floc Granules 2kg
Pro-Swim
Pro-Swim Floc Granules 2kg Sale price£11.03
Save £5.71
Lovibond QAC Test 250 Tablets
Lovibond
Lovibond QAC Test 250 Tablets Sale price£38.20 Regular price£43.91
Pro-Swim Mini Chlorine TabsPro-Swim Mini Chlorine Tabs
Pro-Swim
Pro-Swim Mini Chlorine Tabs Sale priceFrom £9.59
Sold out
Pro-Swim Pro-Chlor Plus Chlorine Granules-5kgPro-Swim Pro-Chlor Plus Chlorine Granules-5kg
Pro-Swim
Pro-Swim Pro-Chlor Plus Chlorine Granules-5kg Sale price£34.35
IDEXX Colilert for 250ml sample
IDEXX
IDEXX Colilert for 250ml sample Sale priceFrom £205.00
On sale
Palintest Kemio Sensors Copper
Palintest
Palintest Kemio Sensors Copper Sale priceFrom £54.74 Regular price£64.40
Lovibond Stirring Rod for Scuba II
Lovibond
Lovibond Stirring Rod for Scuba II Sale price£4.62
Save £35.41
Lovibond BOD Sensor HeadLovibond BOD Sensor Head
Lovibond
Lovibond BOD Sensor Head Sale price£236.94 Regular price£272.35

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