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.

Filters

Sort by:

4194 products

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
Sold outSave £1.45
Palintest Cyanuric Acid - 50 TestsPalintest Cyanuric Acid - 50 Tests
Palintest
Palintest Cyanuric Acid - 50 Tests Sale price£13.05 Regular price£14.50
On sale
Lovibond Spare Cells for Checkit
Lovibond
Lovibond Spare Cells for Checkit Sale priceFrom £2.90
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
Save £18.00
Palintest Lumiso Expert Check Standards
Palintest
Palintest Lumiso Expert Check Standards Sale price£102.00 Regular price£120.00
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
TH3 - Hardness LR Titrant
DTK-TAW
TH3 - Hardness LR Titrant Sale price£11.31
TH2 - Total Hardness BufferTH2 - Total Hardness Buffer
DTK-TAW
TH2 - Total Hardness Buffer Sale price£6.65
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 £5.76
Palintest Contour Comparator Disc (Free & Total Chlorine)Palintest Contour Comparator Disc (Free & Total Chlorine)
Palintest
Palintest Contour Comparator Disc (Free & Total Chlorine) Sale price£32.64 Regular price£38.40
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
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 £57.45
Palintest Multi Parameter Pocket Sensor
Palintest
Palintest Multi Parameter Pocket Sensor Sale price£325.55 Regular price£383.00
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
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
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
Save £10.89
Palintest COD (Merc-Free), Photometer Tubetests, 500 - 20,000 mg/L O2Palintest COD (Merc-Free), Photometer Tubetests, 500 - 20,000 mg/L O2
Palintest
Palintest COD (Merc-Free), Photometer Tubetests, 500 - 20,000 mg/L O2 Sale price£61.71 Regular price£72.60
Palintest Molybdate HR TabletsPalintest Molybdate HR Tablets
Palintest
Palintest Molybdate HR Tablets Sale price£103.51
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
Lovibond Phosphate HR Comp.TabletsLovibond Phosphate HR Comp.Tablets
Lovibond
Lovibond Phosphate HR Comp.Tablets Sale price£43.81
Lovibond Chlorine DPD Checkit Disc 0-4mg/lLovibond Chlorine DPD Checkit Disc 0-4mg/l
Lovibond
Lovibond Chlorine DPD Checkit Disc 0-4mg/l Sale price£25.16
Save £3.15
Palintest Plastic Stirring Rods
Palintest
Palintest Plastic Stirring Rods Sale price£17.85 Regular price£21.00
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

International Delivery

For small orders & export tenders

12,000+ PRODUCTS

From the Market Leaders

Support & Trade Accounts

Contact Us for Support & Trade Accounts

Secure payments

Online payments securely administed by Shopify