Best Selling Products

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

Filters
Sort by:

3997 products

Lovibond DPD No.1, DPD No.3 & pH ReagentsLovibond DPD No.1, DPD No.3 & pH Reagents
Lovibond
Lovibond DPD No.1, DPD No.3 & pH Reagents Sale priceFrom £63.00
On sale
Palintest Coppercol Photometer TabletsPalintest Coppercol Photometer Tablets
Palintest
Palintest Coppercol Photometer Tablets Sale priceFrom £54.27 Regular price£60.30
On sale
Palintest Iron MR TabletsPalintest Iron MR Tablets
Palintest
Palintest Iron MR Tablets Sale priceFrom £66.51 Regular price£73.90
Lovibond Hardness Yes/No TabletsLovibond Hardness Yes/No Tablets
Lovibond
Lovibond Hardness Yes/No Tablets Sale priceFrom £14.97
Save £4.23
Lovibond DPD 4 Rapid Dissolve TabletsLovibond DPD 4 Rapid Dissolve Tablets
Lovibond
Lovibond DPD 4 Rapid Dissolve Tablets Sale priceFrom £13.00
PoolLab Calcium Hardness Liquid Reagents KitPoolLab Calcium Hardness Liquid Reagents Kit
WATER-I.D.
PoolLab Calcium Hardness Liquid Reagents Kit Sale price£17.61
Palintest Total Alkalinity Tablet Count Bottle 250 tabletsPalintest Total Alkalinity Tablet Count Bottle 250 tablets
Palintest
Palintest Total Alkalinity Tablet Count Bottle 250 tablets Sale price£16.90
Save £2.66
Palintest Instachlor Tablets -100 tabletsPalintest Instachlor Tablets -100 tablets
Palintest
Palintest Instachlor Tablets -100 tablets Sale price£23.94 Regular price£26.60
Save £2.90
Palintest XT Extended Range Photometer Tablets 250Palintest XT Extended Range Photometer Tablets 250
Palintest
Palintest XT Extended Range Photometer Tablets 250 Sale price£26.10 Regular price£29.00
On sale
Palintest Cyanuric Acid TabletsPalintest Cyanuric Acid Tablets
Palintest
Palintest Cyanuric Acid Tablets Sale priceFrom £12.40
On sale
Palintest Sulphate TabletsPalintest Sulphate Tablets
Palintest
Palintest Sulphate Tablets Sale priceFrom £18.54 Regular price£20.60
On sale
Palintest Chloride (Chloridol) TabletsPalintest Chloride (Chloridol) Tablets
Palintest
Palintest Chloride (Chloridol) Tablets Sale priceFrom £49.68 Regular price£55.20
Save £8.88
Palintest Ammonia (Nessler), 0 - 100 mg/L N TubetestsPalintest Ammonia (Nessler), 0 - 100 mg/L N Tubetests
Palintest
Palintest Ammonia (Nessler), 0 - 100 mg/L N Tubetests Sale priceFrom £79.92 Regular price£88.80
On sale
Palintest Iron High Range ReagentsPalintest Iron High Range Reagents
Palintest
Palintest Iron High Range Reagents Sale priceFrom £28.44 Regular price£31.60
Lovibond Spare Bottle For SamplerLovibond Spare Bottle For Sampler
Lovibond
Lovibond Spare Bottle For Sampler Sale price£11.78
Spa & Hot Tub Microbiological SamplingHow to take a water sample
Test All Water
Spa & Hot Tub Microbiological Sampling Sale priceFrom £46.50
LaMotte Insta-Test Peracetic Acid High Range Test Strips 0 - 1000LaMotte Insta-Test Peracetic Acid High Range Test Strips 0 - 1000
Lamotte
LaMotte Insta-Test Peracetic Acid High Range Test Strips 0 - 1000 Sale price£17.26
On sale
Palintest Ozone Photometer TabletsPalintest Ozone Photometer Tablets
Palintest
Palintest Ozone Photometer Tablets Sale priceFrom £26.64 Regular price£29.60
On sale
Palintest Iron Low Range TabletsPalintest Iron Low Range Tablets
Palintest
Palintest Iron Low Range Tablets Sale priceFrom £44.28 Regular price£49.20
Lovibond Phenol Red Comparator TabletsLovibond Phenol Red Comparator Tablets
Lovibond
Lovibond Phenol Red Comparator Tablets Sale priceFrom £4.73
Save £0.67
Palintest Chlorine / pH MinikitPalintest Chlorine / pH Minikit
Palintest
Palintest Chlorine / pH Minikit Sale price£6.03 Regular price£6.70
Lovibond Scuba3sLovibond Scuba3s
Lovibond
Lovibond Scuba3s Sale price£122.16
On sale
Palintest Alkaphot Photometer ReagentsPalintest Alkaphot Photometer Reagents
Palintest
Palintest Alkaphot Photometer Reagents Sale priceFrom £30.69 Regular price£34.10
Pool Lab 2.0 PhotometerPool Lab 2.0 Photometer
WATER-I.D.
Pool Lab 2.0 Photometer Sale price£146.00

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