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:

4197 products

Poollab 1.0 Reference Standard KitPoollab 1.0 Reference Standard Kit
WATER-I.D.
Poollab 1.0 Reference Standard Kit Sale price£92.21
Eutech Clear pH 1.68 Buffer Solution 480ml
Eutech
Eutech Clear pH 1.68 Buffer Solution 480ml Sale price£19.40
Save £3.60
Lovibond Hydrogen Peroxide HR Rapid 100 Tablets
Lovibond
Lovibond Hydrogen Peroxide HR Rapid 100 Tablets Sale price£24.10 Regular price£27.70
Save £3.76
Lovibond Nitrate LR Checkit Disc 0 - 1 mg/L N
Lovibond
Lovibond Nitrate LR Checkit Disc 0 - 1 mg/L N Sale price£25.16 Regular price£28.92
Palintest Arsenic Filter Slide Pack
Palintest
Palintest Arsenic Filter Slide Pack Sale price£6.00
Hanna Instruments
HI-766E1 General Purpose K-Type Thermocouple Probe with Handle Sale price£85.69 Regular price£90.20
Hanna Instruments
Hanna Instruments Calibration Certificates Sale price£78.75
HQ430D Laboratory Single Input, Multi-Parameter Meter - pH, Conductivity, Optical Dissolved Oxygen, ORP, and ISE with Electrode StandHQ430D Laboratory Single Input, Multi-Parameter Meter - pH, Conductivity, Optical Dissolved Oxygen, ORP, and ISE with Electrode Stand
Hach
HQ430D Laboratory Single Input, Multi-Parameter Meter - pH, Conductivity, Optical Dissolved Oxygen, ORP, and ISE with Electrode Stand Sale price£1,895.00
Hach
HACH HQ430D Sale price£1,779.57
Save £2.13
Hanna Instruments HI-70007P PH 7.01 BUFFER SACHETS, 25 X 20 ML SACHETS
Hanna Instruments
Hanna Instruments HI-70007P PH 7.01 BUFFER SACHETS, 25 X 20 ML SACHETS Sale price£40.47 Regular price£42.60
Save £1.55
Lovibond Mini Test Kit Chlorine 0-3mg/l / Bromine 0.2-6.8Lovibond Mini Test Kit Chlorine 0-3mg/l / Bromine 0.2-6.8
Lovibond
Lovibond Mini Test Kit Chlorine 0-3mg/l / Bromine 0.2-6.8 Sale price£10.38 Regular price£11.93
Lovibond Refill Pack Copper/pH
Lovibond
Lovibond Refill Pack Copper/pH Sale price£13.86
Save £4.95
Palintest Kemio Degassing Filter
Palintest
Palintest Kemio Degassing Filter Sale price£28.05 Regular price£33.00
Palintest USB Photometer-Computer PSU Cable
Palintest
Palintest USB Photometer-Computer PSU Cable Sale price£46.52
Save £1.75
Palintest USB Lead 1m
Palintest
Palintest USB Lead 1m Sale price£9.95 Regular price£11.70
Save £11.04
Palintest Multi Photometer USB Power Supply Unit
Palintest
Palintest Multi Photometer USB Power Supply Unit Sale price£62.56 Regular price£73.60
Save £1.41
Palintest Plastic Syringe 50 mL (Luer Fitting)
Palintest
Palintest Plastic Syringe 50 mL (Luer Fitting) Sale price£12.69 Regular price£14.10
Save £1.18
Palintest Plastic Syringe 20 mL (Luer Fitting)
Palintest
Palintest Plastic Syringe 20 mL (Luer Fitting) Sale price£10.62 Regular price£11.80
Palintest 2.5 ml Extract Scoop
Palintest
Palintest 2.5 ml Extract Scoop Sale price£5.74
Save £20.25
Palintest Replacement pH Electrode
Palintest
Palintest Replacement pH Electrode Sale price£114.75 Regular price£135.00
Save £13.50
Palintest Replacement Conductivity Probe
Palintest
Palintest Replacement Conductivity Probe Sale price£76.50 Regular price£90.00
Save £3.23
Lovibond Compact Pool Test Kit Active oxygen/pH, in bubble packLovibond Compact Pool Test Kit Active oxygen/pH, in bubble pack
Lovibond
Lovibond Compact Pool Test Kit Active oxygen/pH, in bubble pack Sale price£21.61 Regular price£24.84
Save £2.31
Lovibond Compact Pool Test Kit Bromine/Chlorine LR-pH, in mini caseLovibond Compact Pool Test Kit Bromine/Chlorine LR-pH, in mini case
Lovibond
Lovibond Compact Pool Test Kit Bromine/Chlorine LR-pH, in mini case Sale price£15.43 Regular price£17.74
Save £6.64
Palintest Cyanuric Acid Rapid Dissolve 250 TabletsPalintest Cyanuric Acid Rapid Dissolve 250 Tablets
Palintest
Palintest Cyanuric Acid Rapid Dissolve 250 Tablets Sale price£59.76 Regular price£66.40

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