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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6008 products

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Lovibond Checkit® Comparator pH UniversalLovibond Checkit® Comparator pH Universal
Lovibond
Lovibond Checkit® Comparator pH Universal Sale price£63.41 Regular price£72.88
Bromine Test Strips [0-5ppm] (50Pk)Bromine Test Strips [0-5ppm] (50Pk)
DTK-TAW
Bromine Test Strips [0-5ppm] (50Pk) Sale price£32.94
AquaSPArkle 02 Gentle LiquidAquaSPArkle 02 Gentle Liquid
Aquasparkle
AquaSPArkle 02 Gentle Liquid Sale price£10.59
Arsenometer® Portable Arsenic Testing Kit Trace2oArsenometer® Portable Arsenic Testing Kit Trace2o
Trace2o
Arsenometer® Portable Arsenic Testing Kit Trace2o Sale price£3,200.00
Baird Parker Agar; Staphylococci.
TEST ALL WATER
Baird Parker Agar; Staphylococci. Sale price£11.56
Save £2.59
Lovibond Alkalinity P 250 BottleLovibond Alkalinity P 250 Bottle
Lovibond
Lovibond Alkalinity P 250 Bottle Sale price£17.31 Regular price£19.90
Sold outSave £2.43
Lovibond Acidifying PT Tablets Foil (250 Tablets) - (Discontinued)Lovibond Acidifying PT Tablets Foil (250 Tablets) - (Discontinued)
Lovibond
Lovibond Acidifying PT Tablets Foil (250 Tablets) - (Discontinued) Sale price£24.72 Regular price£27.15
HACH Total Nitrogen Reagent B Powder Pillows, pk/50
Hach
HACH Total Nitrogen Reagent B Powder Pillows, pk/50 Sale price£22.80
Legionnaires' Standard Legionella Thermometer KitLegionnaires' Standard Legionella Thermometer Kit
ETI
Legionnaires' Standard Legionella Thermometer Kit Sale price£113.00
Save £2.30
Hanna Instruments HI-93713-01 Phosphate Low Range Reagent
Hanna Instruments
Hanna Instruments HI-93713-01 Phosphate Low Range Reagent Sale price£38.00 Regular price£40.30
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
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
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
Lovibond ACETIC ACID 20% 65ml
Lovibond
Lovibond ACETIC ACID 20% 65ml Sale price£6.86
Milwaukee MW803 MAX Waterproof Low Range 4-in-1 pH / EC / TDS/Temp Tester with Replaceable ProbeMilwaukee MW803 MAX Waterproof Low Range 4-in-1 pH / EC / TDS/Temp Tester with Replaceable Probe
Milwaukee
Milwaukee MW803 MAX Waterproof Low Range 4-in-1 pH / EC / TDS/Temp Tester with Replaceable Probe Sale price£217.88
Milwaukee MI528-25 Powder Reagents for Iron Photometer
Milwaukee
Milwaukee MI528-25 Powder Reagents for Iron Photometer Sale price£12.69
Milwaukee MW102 PRO+ 2-in-1 pH and Temperature Meter with ATCMilwaukee MW102 PRO+ 2-in-1 pH and Temperature Meter with ATC
Milwaukee
Milwaukee MW102 PRO+ 2-in-1 pH and Temperature Meter with ATC Sale price£193.75
Milwaukee MA9004 pH 4.01 Calibration Solution
Milwaukee
Milwaukee MA9004 pH 4.01 Calibration Solution Sale price£16.44
Milwaukee CD610 Digital High Range TDS PenMilwaukee CD610 Digital High Range TDS Pen
Milwaukee
Milwaukee CD610 Digital High Range TDS Pen Sale price£34.31
Milwaukee pH54 Waterproof pH Tester with Replaceable ProbeMilwaukee pH54 Waterproof pH Tester with Replaceable Probe
Milwaukee
Milwaukee pH54 Waterproof pH Tester with Replaceable Probe Sale price£50.69
Save £3.53
Lovibond CyA HR-Test Tablets 100 Pack
Lovibond
Lovibond CyA HR-Test Tablets 100 Pack Sale price£23.66 Regular price£27.19
Lamotte Spin Disk Reagent Cartridge Chlorine/Bromine Plus Phosphate 10 Way Disk, 100/bxLamotte Spin Disk Reagent Cartridge Chlorine/Bromine Plus Phosphate 10 Way Disk, 100/bx
LaMotte
Lamotte Spin Disk Reagent Cartridge Chlorine/Bromine Plus Phosphate 10 Way Disk, 100/bx Sale price£250.00
LaMotte Insta-Test 5
LaMotte
LaMotte Insta-Test 5 Sale price£10.44
LaMotte Insta Test 4 PlusLaMotte Insta Test 4 Plus
LaMotte
LaMotte Insta Test 4 Plus Sale price£7.06

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