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

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Lovibond Plastic shaker tube, graduated 30 ml, with lidLovibond Plastic shaker tube, graduated 30 ml, with lid
Lovibond
Lovibond Plastic shaker tube, graduated 30 ml, with lid Sale price£7.82 Regular price£8.99
Lovibond
Lovibond Chloride HT Titrant BC2 Sale price£19.52 Regular price£22.44
Oasis 67mg HOME (Foil) Water Purification Tablets
Oasis
Oasis 67mg HOME (Foil) Water Purification Tablets Sale priceFrom £22.16
Topline Zirkon ORP/Chlorine SensorTopline Zirkon ORP/Chlorine Sensor
Kuntze Instruments
Topline Zirkon ORP/Chlorine Sensor Sale price£173.91
Biospot GranulesBiospot Granules
Biospot
Biospot Granules Sale priceFrom £3.87
Save £4.51
Hanna Instruments HI-727 Colour Of Water CheckerHanna Instruments HI-727 Colour Of Water Checker
Hanna Instruments
Hanna Instruments HI-727 Colour Of Water Checker Sale price£85.69 Regular price£90.20
Save £4.72
Hanna Instruments HI-726-25 Reagents for HI-726 Nickel HR CheckerHanna Instruments HI-726-25 Reagents for HI-726 Nickel HR Checker
Hanna Instruments
Hanna Instruments HI-726-25 Reagents for HI-726 Nickel HR Checker Sale price£89.68 Regular price£94.40
Save £4.32
Hanna Instruments HI-723 Chromium VI High Range Checker HCHanna Instruments HI-723 Chromium VI High Range Checker HC
Hanna Instruments
Hanna Instruments HI-723 Chromium VI High Range Checker HC Sale price£82.18 Regular price£86.50
Save £2.45
Hanna Instruments HI-739-26 Fluoride HR Reagents for HI-739 CheckerHanna Instruments HI-739-26 Fluoride HR Reagents for HI-739 Checker
Hanna Instruments
Hanna Instruments HI-739-26 Fluoride HR Reagents for HI-739 Checker Sale price£46.55 Regular price£49.00
Save £4.51
Hanna Instruments HI-705 Silica Low Range Colorimeter Checker HCHanna Instruments HI-705 Silica Low Range Colorimeter Checker HC
Hanna Instruments
Hanna Instruments HI-705 Silica Low Range Colorimeter Checker HC Sale price£85.69 Regular price£90.20
Chlorine Probe Ezetrol 101
Kuntze Instruments
Chlorine Probe Ezetrol 101 Sale price£305.49
Save £0.64
Hanna Instruments HI-764-25 Reagents for HI-764 Nitrite Marine ULR Checker
Hanna Instruments
Hanna Instruments HI-764-25 Reagents for HI-764 Nitrite Marine ULR Checker Sale price£12.16 Regular price£12.80
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Hanna Instruments HI-97711 FREE AND TOTAL CHLORINE PORTABLE PHOTOMETERHanna Instruments HI-97711 FREE AND TOTAL CHLORINE PORTABLE PHOTOMETER
Hanna Instruments
Hanna Instruments HI-97711 FREE AND TOTAL CHLORINE PORTABLE PHOTOMETER Sale priceFrom £502.46 Regular price£528.90
Palintest Arsenic Filter Paper (Labelled Red)
Palintest
Palintest Arsenic Filter Paper (Labelled Red) Sale price£15.00
Save £10.64
Lovibond Checkit Comparator Chlorine Dioxide
Lovibond
Lovibond Checkit Comparator Chlorine Dioxide Sale price£71.20 Regular price£81.84
Hach
Hach Iron Standard Solution 1ppm 500ml Sale price£66.95
Save £22.05
Palintest Kemio Degassing Equipment
Palintest
Palintest Kemio Degassing Equipment Sale price£124.95 Regular price£147.00
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Palintest Absorbent Cloths 5 Pack
Palintest
Palintest Absorbent Cloths 5 Pack Sale price£8.93 Regular price£10.50
Save £13.42
Palintest Contour Compatator Kit Phosphate LR 0 - 4 mg/L PO4Palintest Contour Compatator Kit Phosphate LR 0 - 4 mg/L PO4
Palintest
Palintest Contour Compatator Kit Phosphate LR 0 - 4 mg/L PO4 Sale price£76.08 Regular price£89.50
Palintest Comparator Disc Manganese HR 0 - 5 mg/L Mn
Palintest
Palintest Comparator Disc Manganese HR 0 - 5 mg/L Mn Sale price£34.05
Blue Horizons Chlorine Shock Pot 1kg - Use SHGRAN1OL if out of stockBlue Horizons Chlorine Shock Pot 1kg - Use SHGRAN1OL if out of stock
Blue Horizons
Blue Horizons Chlorine Shock Pot 1kg - Use SHGRAN1OL if out of stock Sale price£12.71
Eutech Oakton pHTestr 30Eutech Oakton pHTestr 30
Eutech
Eutech Oakton pHTestr 30 Sale price£135.68
Small Telescopic Floating Dispenser EmptySmall Telescopic Floating Dispenser Empty
CPC
Small Telescopic Floating Dispenser Empty Sale price£4.52
Save £9.82
Lovibond Pooltester Chlorine / pH High Range
Lovibond
Lovibond Pooltester Chlorine / pH High Range Sale price£11.50 Regular price£21.32

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