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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5604 products

On sale
Lovibond Spare Cells for Checkit
Lovibond
Lovibond Spare Cells for Checkit Sale priceFrom £2.90
Lovibond Comparator 2000+ Phenol Red DiscLovibond Comparator 2000+ Phenol Red Disc
Lovibond
Lovibond Comparator 2000+ Phenol Red Disc Sale price£136.26
Lovibond Alkalinity Tablet Count Foil - 100 tabletsLovibond Alkalinity Tablet Count Foil - 100 tablets
Lovibond
Lovibond Alkalinity Tablet Count Foil - 100 tablets Sale price£19.71
Palintest Steadichlor 'N.X, 5kgPalintest Steadichlor 'N.X, 5kg
Palintest
Palintest Steadichlor 'N.X, 5kg Sale price£125.00
IDEXX Colilert-18
IDEXX
IDEXX Colilert-18 Sale priceFrom £192.00
Water-I.D: DPD No.4 Photometer TabletsWater-I.D: DPD No.4 Photometer Tablets
WATER-I.D.
Water-I.D: DPD No.4 Photometer Tablets Sale priceFrom £6.95
Save £3.42
Palintest pH 10 Buffer Solution - 500mlPalintest pH 10 Buffer Solution - 500ml
Palintest
Palintest pH 10 Buffer Solution - 500ml Sale price£19.38 Regular price£22.80
Lovibond Phosphate HR Comp.TabletsLovibond Phosphate HR Comp.Tablets
Lovibond
Lovibond Phosphate HR Comp.Tablets Sale price£43.81
Save £57.45
Palintest Multi Parameter Pocket Sensor
Palintest
Palintest Multi Parameter Pocket Sensor Sale price£325.55 Regular price£383.00
Save £3.15
Palintest Plastic Stirring Rods
Palintest
Palintest Plastic Stirring Rods Sale price£17.85 Regular price£21.00
Save £19.65
Palintest Pistol Grip Hand Vacuum PumpPalintest Pistol Grip Hand Vacuum Pump
Palintest
Palintest Pistol Grip Hand Vacuum Pump Sale price£111.35 Regular price£131.00
Water-I.D: Phenol Red Rapid ReagentsWater-I.D: Phenol Red Rapid Reagents
WATER-I.D.
Water-I.D: Phenol Red Rapid Reagents Sale price£5.95
S2 - Sulphite LR Titrant
DTK-TAW
S2 - Sulphite LR Titrant Sale price£11.23
PH1 - pH/Temperature Meter c/w pH 4, 7 & 10 SolutionsPH1 - pH/Temperature Meter c/w pH 4, 7 & 10 Solutions
DTK-TAW
PH1 - pH/Temperature Meter c/w pH 4, 7 & 10 Solutions Sale price£141.52
On sale
Palintest Kemio Sensors for Chlorine (High Range)Palintest Kemio Sensors for Chlorine (High Range)
Palintest
Palintest Kemio Sensors for Chlorine (High Range) Sale priceFrom £119.85 Regular price£141.00
Save £10.21
Palintest Hydrogen Peroxide (LR)Palintest Hydrogen Peroxide (LR)
Palintest
Palintest Hydrogen Peroxide (LR) Sale price£57.89 Regular price£68.10
Save £20.40
Palintest Copper (Free), Photometer Reagents, 0-5 mg/L CuPalintest Copper (Free), Photometer Reagents, 0-5 mg/L Cu
Palintest
Palintest Copper (Free), Photometer Reagents, 0-5 mg/L Cu Sale price£115.60 Regular price£136.00
Save £12.00
Palintest Chemical Oxygen Demand (COD) Tubetests - Containing Mercury for high Chloride 500 - 20,000 mg/L 02Palintest Chemical Oxygen Demand (COD) Tubetests - Containing Mercury for high Chloride 500 - 20,000 mg/L 02
Palintest
Palintest Chemical Oxygen Demand (COD) Tubetests - Containing Mercury for high Chloride 500 - 20,000 mg/L 02 Sale price£68.00 Regular price£80.00
Save £4.10
Lovibond Vario Chlorine Total DPD 10mlLovibond Vario Chlorine Total DPD 10ml
Lovibond
Lovibond Vario Chlorine Total DPD 10ml Sale price£27.44 Regular price£31.54
Save £124.81
Lovibond Pool Control PM630 PhotometerLovibond Pool Control PM630 Photometer
Lovibond
Lovibond Pool Control PM630 Photometer Sale price£835.27 Regular price£960.08
Save £2.46
Lovibond D003 TTC/ROSE - Yeasts, Moulds, Fungi & TVCLovibond D003 TTC/ROSE - Yeasts, Moulds, Fungi & TVC
Lovibond
Lovibond D003 TTC/ROSE - Yeasts, Moulds, Fungi & TVC Sale price£16.46 Regular price£18.92
LaMotte Insta Test Chlorine Dioxide 0- 500 Test StripsLaMotte Insta Test Chlorine Dioxide 0- 500 Test Strips
LaMotte
LaMotte Insta Test Chlorine Dioxide 0- 500 Test Strips Sale price£18.77
Save £4.29
Palintest Bromine Photometer 250 ReagentsPalintest Bromine Photometer 250 Reagents
Palintest
Palintest Bromine Photometer 250 Reagents Sale price£24.31 Regular price£28.60
Save £27.41
Lovibond SD40 Multiparameter pH, TDS, EC, Salt, TemperatureLovibond SD40 Multiparameter pH, TDS, EC, Salt, Temperature
Lovibond
Lovibond SD40 Multiparameter pH, TDS, EC, Salt, Temperature Sale price£183.43 Regular price£210.84

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