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.

Filters

Sort by:

4163 products

Test All Water pH Minus/Dry AcidTest All Water pH Minus/Dry Acid
TEST ALL WATER
Test All Water pH Minus/Dry Acid Sale priceFrom £6.58
Save £18.45
Palintest Hydrogen Peroxide High Range Test ReagentsPalintest Hydrogen Peroxide High Range Test Reagents
Palintest
Palintest Hydrogen Peroxide High Range Test Reagents Sale price£104.55 Regular price£123.00
Save £13.26
Palintest Contour Comparator Kit Chlorine High Range 0-50mg/lPalintest Contour Comparator Kit Chlorine High Range 0-50mg/l
Palintest
Palintest Contour Comparator Kit Chlorine High Range 0-50mg/l Sale price£75.14 Regular price£88.40
Save £26.25
Palintest Chromium (Vl), Photometer ReagentsPalintest Chromium (Vl), Photometer Reagents
Palintest
Palintest Chromium (Vl), Photometer Reagents Sale price£148.75 Regular price£175.00
On sale
Lovibond DPD No. 3 Evo TabletsLovibond DPD No. 3 Evo Tablets
Lovibond
Lovibond DPD No. 3 Evo Tablets Sale priceFrom £12.50 Regular price£14.37
Pro-Swim Brominating Granules
Pro-Swim
Pro-Swim Brominating Granules Sale price£41.85
Palintest Chlorine DPD 2 TabletsPalintest Chlorine DPD 2 Tablets
Palintest
Palintest Chlorine DPD 2 Tablets Sale price£12.87
Lovibond Phosphate Low Range Combination Pack No.1 & No 2Lovibond Phosphate Low Range Combination Pack No.1 & No 2
Lovibond
Lovibond Phosphate Low Range Combination Pack No.1 & No 2 Sale price£52.88
Lovibond MD610 PhotometerLovibond MD610 Photometer
Lovibond
Lovibond MD610 Photometer Sale price£1,184.76
Lovibond Hardcheck P TabletsLovibond Hardcheck P Tablets
Lovibond
Lovibond Hardcheck P Tablets Sale priceFrom £21.09
Save £9.47
Lovibond Checkit Comparator Chlorine 0-4 mg/l Test KitLovibond Checkit Comparator Chlorine 0-4 mg/l Test Kit
Lovibond
Lovibond Checkit Comparator Chlorine 0-4 mg/l Test Kit Sale price£63.41 Regular price£72.88
PoolLab Total Hardness Liquid ReagentsPoolLab Total Hardness Liquid Reagents
WATER-I.D.
PoolLab Total Hardness Liquid Reagents Sale price£14.15
Save £12.85
Palintest Kemio Replacement Battery
Palintest
Palintest Kemio Replacement Battery Sale price£72.85 Regular price£85.70
Save £6.91
Palintest Chlorine (Free & Total) Pocket KitPalintest Chlorine (Free & Total) Pocket Kit
Palintest
Palintest Chlorine (Free & Total) Pocket Kit Sale price£39.19 Regular price£46.10
Oakton TDSTestr 11Oakton TDSTestr 11
Eutech
Oakton TDSTestr 11 Sale price£99.20
Lovibond COD Vario Vials Test 20-1500mg/l, 16mmLovibond COD Vario Vials Test 20-1500mg/l, 16mm
Lovibond
Lovibond COD Vario Vials Test 20-1500mg/l, 16mm Sale price£53.37
Save £3.55
Palintest Pooltester Chlorine/pH/Total AlkalinityPalintest Pooltester Chlorine/pH/Total Alkalinity
Palintest
Palintest Pooltester Chlorine/pH/Total Alkalinity Sale price£20.15 Regular price£23.70
PoolLab 2.0 Replacement CuvettePoolLab 2.0 Replacement Cuvette
WATER-I.D.
PoolLab 2.0 Replacement Cuvette Sale price£10.59
PoolLab Calcium Hardness No.2 Photometer 100 TabletsPoolLab Calcium Hardness No.2 Photometer 100 Tablets
WATER-I.D.
PoolLab Calcium Hardness No.2 Photometer 100 Tablets Sale price£23.78
Sold out
Lovibond 5 in 1 Multi-PooltesterLovibond 5 in 1 Multi-Pooltester
Lovibond
Lovibond 5 in 1 Multi-Pooltester Sale price£51.14
PoolLab Plastic Stirring Rod
WATER-I.D.
PoolLab Plastic Stirring Rod Sale price£1.13
Test All Water pH Plus/ Soda Ash 5kgTest All Water pH Plus/ Soda Ash 5kg
TEST ALL WATER
Test All Water pH Plus/ Soda Ash 5kg Sale price£10.28
Save £3.19
Palintest Ammonia Conditioning PowderPalintest Ammonia Conditioning Powder
Palintest
Palintest Ammonia Conditioning Powder Sale price£18.11 Regular price£21.30
PA2/TA2 - Alkalinity HR TitrantPA2/TA2 - Alkalinity HR Titrant
DTK-TAW
PA2/TA2 - Alkalinity HR Titrant Sale priceFrom £8.50

International Delivery

For small orders & export tenders

12,000+ PRODUCTS

From the Market Leaders

Support & Trade Accounts

Contact Us for Support & Trade Accounts

Secure payments

Online payments securely administed by Shopify