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

Hanna Instruments 1413 µS/cm EC value @ 25°C, 1 L bottle
Hanna Instruments
Hanna Instruments 1413 µS/cm EC value @ 25°C, 1 L bottle Sale price£38.65
Eutech PH 1710 pH/mV Bench Meter KitEutech PH 1710 pH/mV Bench Meter Kit
Eutech
Eutech PH 1710 pH/mV Bench Meter Kit Sale price£600.75
Hanna Instruments HI-7071L Electrolyte Solution, 3.5M KCl + AgCl, 500mL
Hanna Instruments
Hanna Instruments HI-7071L Electrolyte Solution, 3.5M KCl + AgCl, 500mL Sale price£65.36
Save £20.56
La Motte Insta-Test 6-Way Drinking Water Test Strips Expired 04/26La Motte Insta-Test 6-Way Drinking Water Test Strips Expired 04/26
Lamotte
La Motte Insta-Test 6-Way Drinking Water Test Strips Expired 04/26 Sale price£6.99 Regular price£27.55
IDEXX Antifoam dropper bottle
IDEXX
IDEXX Antifoam dropper bottle Sale price£30.00
Hanna Instruments HI-97718 Iodine photometer: range 0.0 to 12.5 mg/L (ppm)
Hanna Instruments
Hanna Instruments HI-97718 Iodine photometer: range 0.0 to 12.5 mg/L (ppm) Sale price£495.00
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HACH Test kit, ozone, model OZ-2
HACH
HACH Test kit, ozone, model OZ-2 Sale price£166.00
Nitrate/Nitrite Test Strips 500/80 Test All Water
TEST ALL WATER
Nitrate/Nitrite Test Strips 500/80 Test All Water Sale price£9.38
Peracetic Acid 0-50 Test Strips Test All Water
TEST ALL WATER
Peracetic Acid 0-50 Test Strips Test All Water Sale price£16.51
Water Hardness 0-500 ppm Test Strips Test All Water
TEST ALL WATER
Water Hardness 0-500 ppm Test Strips Test All Water Sale price£8.80
pH Indicator Strips pH 7.0 - 14.0 Test All WaterpH Indicator Strips pH 7.0 - 14.0 Test All Water
TEST ALL WATER
pH Indicator Strips pH 7.0 - 14.0 Test All Water Sale price£3.84
Phosphate Indicator strips 500 Test All Water
TEST ALL WATER
Phosphate Indicator strips 500 Test All Water Sale price£8.80
Chlorine Indicator Strips (0-1000mg/l) (100 Strips) Test All Water
TEST ALL WATER
Chlorine Indicator Strips (0-1000mg/l) (100 Strips) Test All Water Sale price£8.21
Peracetic Acid 0-500 Test Strips (Test All Water)
TEST ALL WATER
Peracetic Acid 0-500 Test Strips (Test All Water) Sale price£11.24
Hanna Instruments HI-7004/1L pH 4.01 Buffer Solution, 1L bottle
Hanna Instruments
Hanna Instruments HI-7004/1L pH 4.01 Buffer Solution, 1L bottle Sale price£39.14
Sold outSave £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
Hanna Instruments HI-93703-0 AMCO-AEPA-1 Calibration Solution at 0 FTU
Hanna Instruments
Hanna Instruments HI-93703-0 AMCO-AEPA-1 Calibration Solution at 0 FTU Sale price£30.00
Chlorine Total, Low Range Test Strips - Range 0-10 Expiry 03/26
Lamotte
Chlorine Total, Low Range Test Strips - Range 0-10 Expiry 03/26 Sale price£2.99
Hanna Instruments HI-93708-01 Nitrite High Range Reagent, Ferrous Sulphate method
Hanna Instruments
Hanna Instruments HI-93708-01 Nitrite High Range Reagent, Ferrous Sulphate method Sale price£45.00
Hanna Instruments HI-93764B-25 Ammonia High Range Reagent, Nessler MethodHanna Instruments HI-93764B-25 Ammonia High Range Reagent, Nessler Method
Hanna Instruments
Hanna Instruments HI-93764B-25 Ammonia High Range Reagent, Nessler Method Sale price£105.00
Test All Water Nutrient Agar with TTC Expiry 19/02/26
TEST ALL WATER
Test All Water Nutrient Agar with TTC Expiry 19/02/26 Sale price£2.99
HACH Freechlor F Reagent Solution, 50 mL
HACH
HACH Freechlor F Reagent Solution, 50 mL Sale price£15.00
HACH Monochlor F Reagent Powder Pillows
HACH
HACH Monochlor F Reagent Powder Pillows Sale price£107.00
Lovibond Hardness Total Indicator Powder TH1P
Lovibond
Lovibond Hardness Total Indicator Powder TH1P Sale price£29.86

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