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

PoolLab Ammonia No.2 Powder Pillows
WATER-I.D.
PoolLab Ammonia No.2 Powder Pillows Sale priceFrom £16.95
PoolLab Aluminium No.2 Tablets
WATER-I.D.
PoolLab Aluminium No.2 Tablets Sale price£16.60
PoolLab Aluminium No.1 Tablets
WATER-I.D.
PoolLab Aluminium No.1 Tablets Sale price£16.60
Save £11.81
Palintest Contour Comparator Kit Chlorine 0-1mg/l/pHPalintest Contour Comparator Kit Chlorine 0-1mg/l/pH
Palintest
Palintest Contour Comparator Kit Chlorine 0-1mg/l/pH Sale price£106.29 Regular price£118.10
Save £2.19
Lovibond Organo-Phosphonate No. 2 100ml
Lovibond
Lovibond Organo-Phosphonate No. 2 100ml Sale price£14.68 Regular price£16.87
LaMotte PH Reagent for ColorQ 30ml
LaMotte
LaMotte PH Reagent for ColorQ 30ml Sale price£6.33
Save £4.23
Lovibond Nitrite No.1 100 Tablets
Lovibond
Lovibond Nitrite No.1 100 Tablets Sale price£28.28 Regular price£32.51
Save £69.60
Palintest Speciated Arsenic SensorsPalintest Speciated Arsenic Sensors
Palintest
Palintest Speciated Arsenic Sensors Sale price£394.40 Regular price£464.00
Lovibond Water Safety Kit Combined
Lovibond
Lovibond Water Safety Kit Combined Sale price£5,712.87
IDEXX Sample vessels With Sodium Thiosulfate
IDEXX
IDEXX Sample vessels With Sodium Thiosulfate Sale price£53.20
Save £3.55
Palintest Chlorine (0.1-3mg/l) /pH / Alkalinity PooltesterPalintest Chlorine (0.1-3mg/l) /pH / Alkalinity Pooltester
Palintest
Palintest Chlorine (0.1-3mg/l) /pH / Alkalinity Pooltester Sale price£20.15 Regular price£23.70
Save £23.63
Lovibond Chlorine Dioxide LR Drop Test KitLovibond Chlorine Dioxide LR Drop Test Kit
Lovibond
Lovibond Chlorine Dioxide LR Drop Test Kit Sale price£158.14 Regular price£181.77
Save £25.31
Lovibond Chlorine Dioxide HR Drop Test Kit
Lovibond
Lovibond Chlorine Dioxide HR Drop Test Kit Sale price£169.42 Regular price£194.73
IDEXX Enterolert-DW for 100ml sample
IDEXX
IDEXX Enterolert-DW for 100ml sample Sale price£1,524.96
Lovibond Alkalinity M (Total) Drop Test Kit
Lovibond
Lovibond Alkalinity M (Total) Drop Test Kit Sale price£94.70
Lovibond Nitrite Drop Test KitLovibond Nitrite Drop Test Kit
Lovibond
Lovibond Nitrite Drop Test Kit Sale price£76.65
Save £1.02
Hanna Instruments HI-729-26 Reagents for HI-729 Fluoride Low Range CheckerHanna Instruments HI-729-26 Reagents for HI-729 Fluoride Low Range Checker
Hanna Instruments
Hanna Instruments HI-729-26 Reagents for HI-729 Fluoride Low Range Checker Sale price£19.38 Regular price£20.40
Save £4.51
Hanna Instruments HI-729 Fluoride Low Range Checker
Hanna Instruments
Hanna Instruments HI-729 Fluoride Low Range Checker Sale price£85.69 Regular price£90.20
Save £4.51
Hanna Instruments HI-726 Nickel High Range CheckerHanna Instruments HI-726 Nickel High Range Checker
Hanna Instruments
Hanna Instruments HI-726 Nickel High Range Checker Sale price£85.69 Regular price£90.20
Topline Zirkon pH Sensor
Kuntze Instruments
Topline Zirkon pH Sensor Sale price£175.10
HACH Intellical PHC201 Laboratory General Purposes Gel Filled pH Electrode, 1m Cable
Hach
HACH Intellical PHC201 Laboratory General Purposes Gel Filled pH Electrode, 1m Cable Sale price£279.13
Bayrol Zirkon Redox Pool SensorBayrol Zirkon Redox Pool Sensor
Kuntze Instruments
Bayrol Zirkon Redox Pool Sensor Sale price£179.61
Bayrol Zirkon pH Sensor
Kuntze Instruments
Bayrol Zirkon pH Sensor Sale price£155.15
Save £0.64
Hanna Instruments HI-717-25 Reagents For Phosphate HR CheckerHanna Instruments HI-717-25 Reagents For Phosphate HR Checker
Hanna Instruments
Hanna Instruments HI-717-25 Reagents For Phosphate HR Checker Sale price£12.16 Regular price£12.80

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