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 MD150 Chlorine Standards 1.0 and 4.0 mg/l (MD150)Lovibond MD150 Chlorine Standards 1.0 and 4.0 mg/l (MD150)
Lovibond
Lovibond MD150 Chlorine Standards 1.0 and 4.0 mg/l (MD150) Sale price£65.00
Kuntze Instruments
Kuntze Neon Instrument Modbus RTU Cloud Communication Sale price£152.95
Save £10.25
Palintest 2 Part Turbidity Tube
Palintest
Palintest 2 Part Turbidity Tube Sale price£54.27 Regular price£64.52
Check₂O Pool & Spa 5 in 1 Test StripsCheck₂O Pool & Spa 5 in 1 Test Strips
Johnson Analytica
Check₂O Pool & Spa 5 in 1 Test Strips Sale priceFrom £2.32
Neon Multi Krypton systemNeon Multi Krypton system
TEST ALL WATER
Neon Multi Krypton system Sale price£4,150.85
Save £3.75
Hanna Instruments HI-782 Nitrate High Range Checker for MarineHanna Instruments HI-782 Nitrate High Range Checker for Marine
Hanna Instruments
Hanna Instruments HI-782 Nitrate High Range Checker for Marine Sale price£71.35 Regular price£75.10
Palintest
Palintest EDTA (250F), C₁₀H₁₆N₂O₈ Reagents Sale price£32.47 Regular price£38.20
Save £491.25
Palintest Kemio Multi Soft Case Kit (Lead, Cadmium, Copper, Bromine, Chlorine, Chlorine Dioxide, Chlorite, Arsenic and Peracetic Acid)
Palintest
Palintest Kemio Multi Soft Case Kit (Lead, Cadmium, Copper, Bromine, Chlorine, Chlorine Dioxide, Chlorite, Arsenic and Peracetic Acid) Sale price£2,783.75 Regular price£3,275.00
Save £404.40
Palintest Kemio Disinfection Chlorite Hard Case Kit.
Palintest
Palintest Kemio Disinfection Chlorite Hard Case Kit. Sale price£2,291.60 Regular price£2,696.00
Hach Nitrate Reagent Powder Pillows, 0.3-30mg/L NO₃-N
Hach
Hach Nitrate Reagent Powder Pillows, 0.3-30mg/L NO₃-N Sale price£63.86
Save £29.10
Palintest Calibration Kit For Turbidity Expert
Palintest
Palintest Calibration Kit For Turbidity Expert Sale price£164.90 Regular price£194.00
Save £1.72
Hanna Instruments HI-7004L pH 4.01 Buffer Solution, 500 mL bottle
Hanna Instruments
Hanna Instruments HI-7004L pH 4.01 Buffer Solution, 500 mL bottle Sale price£32.68 Regular price£34.40
Hydrosense PRO Ultra Legionella Industrial KitHydrosense PRO Ultra Legionella Industrial Kit
Hydrosense
Hydrosense PRO Ultra Legionella Industrial Kit Sale price£355.82
IDEXX 120ml Vessels without Sodium Thiosulphate
IDEXX
IDEXX 120ml Vessels without Sodium Thiosulphate Sale priceFrom £49.00
Ice Bath / Cold Plunge Microbiological SamplingIce Bath / Cold Plunge Microbiological Sampling
TEST ALL WATER
Ice Bath / Cold Plunge Microbiological Sampling Sale priceFrom £46.50
Elite PCTS pH / Conductivity / TDS / Salinity Pocket Testers and Replacement SensorsElite PCTS pH / Conductivity / TDS / Salinity Pocket Testers and Replacement Sensors
TEST ALL WATER
Elite PCTS pH / Conductivity / TDS / Salinity Pocket Testers and Replacement Sensors Sale price£46.00
Save £9.18
Lovibond VARIO Nitri 3 F25ml
Lovibond
Lovibond VARIO Nitri 3 F25ml Sale price£61.41 Regular price£70.59
Hach ZincoVer 5 Zinc Reagent Powder Pillows
Hach
Hach ZincoVer 5 Zinc Reagent Powder Pillows Sale price£104.03
Hach SulfaVer 4 Sulfate Reagent Powder Pillows, 2-70 mg/L, 10 mL sample, pk/100
Hach
Hach SulfaVer 4 Sulfate Reagent Powder Pillows, 2-70 mg/L, 10 mL sample, pk/100 Sale price£61.80
Test All Water Ltd - Spa SparkleTest All Water Ltd - Spa Sparkle
Test All Water
Test All Water Ltd - Spa Sparkle Sale price£8.50
SD300 PH Meter With pH-electrodeSD300 PH Meter With pH-electrode
Test All Water
SD300 PH Meter With pH-electrode Sale price£350.00
PoolLab EDTA Tablets
WATER-I.D.
PoolLab EDTA Tablets Sale price£9.45
Palintest
Palintest Glass Microfibre Filter discs, 1µm, 25mm, 50 Pack Sale price£67.23 Regular price£74.70
PoolLab DPD No.2 TabletsPoolLab DPD No.2 Tablets
WATER-I.D.
PoolLab DPD No.2 Tablets Sale price£5.95

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