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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4195 products

Lovibond
Lovibond Conductivity (12.89 mS) and TDS (9.02 ppth) calibration solution 100ml Sale price£42.00 Regular price£57.13
HACH COD TNT, Mercury free, 0 - 1500 mg/L O₂HACH COD TNT, Mercury free, 0 - 1500 mg/L O₂
HACH
HACH COD TNT, Mercury free, 0 - 1500 mg/L O₂ Sale price£75.00
HACH COD TNT, Mercury free, 25 - 150 mg/L O₂HACH COD TNT, Mercury free, 25 - 150 mg/L O₂
HACH
HACH COD TNT, Mercury free, 25 - 150 mg/L O₂ Sale price£76.00
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Hanna Instruments BL-5-2 Blackstone Chemical Pump
Hanna Instruments
Hanna Instruments BL-5-2 Blackstone Chemical Pump Sale price£255.00
Hanna Instruments HI-7010/1L pH 10.01 Buffer Solution, 1L bottle
Hanna Instruments
Hanna Instruments HI-7010/1L pH 10.01 Buffer Solution, 1L bottle Sale price£39.14
Hanna Instruments HI-7007/1L pH 7.01 Buffer Solution, 1L bottle
Hanna Instruments
Hanna Instruments HI-7007/1L pH 7.01 Buffer Solution, 1L bottle Sale price£39.14
Hanna Instruments HI-93754J-25 Ultra High Range Chemical Oxygen Demand Reagents, 25 tests
Hanna Instruments
Hanna Instruments HI-93754J-25 Ultra High Range Chemical Oxygen Demand Reagents, 25 tests Sale price£69.35
Hanna Instruments HI-70009P pH 9.18 Buffer Sachets, 25 x 20 mL sachets
Hanna Instruments
Hanna Instruments HI-70009P pH 9.18 Buffer Sachets, 25 x 20 mL sachets Sale price£38.67
Hanna Instruments HI-70006P pH 6.86 Buffer Sachets, 25 x 20 mL sachets
Hanna Instruments
Hanna Instruments HI-70006P pH 6.86 Buffer Sachets, 25 x 20 mL sachets Sale price£38.67
Hanna Instruments HI-7006L pH 6.86 Buffer Solution, 500 mL bottle
Hanna Instruments
Hanna Instruments HI-7006L pH 6.86 Buffer Solution, 500 mL bottle Sale price£31.73
Save £15.11
Hanna Instruments HI-7024 Copper Checker ClearanceHanna Instruments HI-7024 Copper Checker Clearance
Hanna Instruments
Hanna Instruments HI-7024 Copper Checker Clearance Sale price£59.99 Regular price£75.10
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Hanna Instruments HI-774 Marine Phosphate ULR Checker ClearanceHanna Instruments HI-774 Marine Phosphate ULR Checker Clearance
Hanna Instruments
Hanna Instruments HI-774 Marine Phosphate ULR Checker Clearance Sale price£59.99 Regular price£75.10
Save £15.11
Hanna Instruments HI-736 Phosphorus Marine Ultra-Low Range Colorimeter - Checker HC ClearanceHanna Instruments HI-736 Phosphorus Marine Ultra-Low Range Colorimeter - Checker HC Clearance
Hanna Instruments
Hanna Instruments HI-736 Phosphorus Marine Ultra-Low Range Colorimeter - Checker HC Clearance Sale price£59.99 Regular price£75.10
Save £10.11
Hanna Instruments HI-781 Marine Nitrate Low Range Handheld Colorimeter, Checker HC ClearanceHanna Instruments HI-781 Marine Nitrate Low Range Handheld Colorimeter, Checker HC Clearance
Hanna Instruments
Hanna Instruments HI-781 Marine Nitrate Low Range Handheld Colorimeter, Checker HC Clearance Sale price£64.99 Regular price£75.10
Lovibond Pipette tips, 0,1-1 ml (blue), Pack of 1000Lovibond Pipette tips, 0,1-1 ml (blue), Pack of 1000
Lovibond
Lovibond Pipette tips, 0,1-1 ml (blue), Pack of 1000 Sale price£60.54
Palintest
Palintest Kemio Sample Vessel HM (10 Pack) Sale price£45.00
Lovibond SD40 Replacement Electrode pH/Con/TDS/Salt/T
Lovibond
Lovibond SD40 Replacement Electrode pH/Con/TDS/Salt/T Sale price£102.89
PrimeLab Filteradapter for PLSp-InjFil-1
WATER-I.D.
PrimeLab Filteradapter for PLSp-InjFil-1 Sale price£34.00
PrimeLab Luer lock syringe ( 20ml) for filter holder
WATER-I.D.
PrimeLab Luer lock syringe ( 20ml) for filter holder Sale price£5.58
Hanna Instruments HI-38074 Boron test kit
Hanna Instruments
Hanna Instruments HI-38074 Boron test kit Sale price£135.00
HACH Sodium periodate powder pillows for manganese, 25 mL, pk/100HACH Sodium periodate powder pillows for manganese, 25 mL, pk/100
HACH
HACH Sodium periodate powder pillows for manganese, 25 mL, pk/100 Sale price£68.00
HACH Butterfield's buffered phosphate, 90 mL
HACH
HACH Butterfield's buffered phosphate, 90 mL Sale price£8.50
Lovibond MD50 COD Set-UpLovibond MD50 COD Set-Up
Lovibond
Lovibond MD50 COD Set-Up Sale price£1,722.24
Easy Dip 3 in 1 Test Strips for Chlorine Bromine/pH/Alkalinity OpenedEasy Dip 3 in 1 Test Strips for Chlorine Bromine/pH/Alkalinity Opened
WATER-I.D.
Easy Dip 3 in 1 Test Strips for Chlorine Bromine/pH/Alkalinity Opened Sale price£2.99

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