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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4022 products

On sale
Lovibond Phenol Red Photometer pH ReagentsLovibond Phenol Red Photometer pH Reagents
Lovibond
Lovibond Phenol Red Photometer pH Reagents Sale priceFrom £13.41 Regular price£14.75
vendor-unknown
Postage / Air Freight Charges Sale price£6.99
PoolLab Phenol Red (pH) TabletsPoolLab Phenol Red (pH) Tablets
WATER-I.D.
PoolLab Phenol Red (pH) Tablets Sale priceFrom £5.95
Sold out
Palintest Hardness Yes / No Tablets (Discontinued) Use codes 503541, 515361 & 515360 for alternativesPalintest Hardness Yes / No Tablets (Discontinued) Use codes 503541, 515361 & 515360 for alternatives
Palintest
Palintest Hardness Yes / No Tablets (Discontinued) Use codes 503541, 515361 & 515360 for alternatives Sale priceFrom £10.80
PoolLab DPD No.1 TabletsPoolLab DPD No.1 Tablets
WATER-I.D.
PoolLab DPD No.1 Tablets Sale priceFrom £5.95
Lovibond Total Alkalinity - Alka-M-Photometer TabletsLovibond Total Alkalinity - Alka-M-Photometer Tablets
Lovibond
Lovibond Total Alkalinity - Alka-M-Photometer Tablets Sale priceFrom £8.22
Sold outSave £1.96
Palintest DPD No 1 Rapid Dissolve 250 Tablets (Replaced by AT050)Palintest DPD No 1 Rapid Dissolve 250 Tablets (Replaced by AT050)
Palintest
Palintest DPD No 1 Rapid Dissolve 250 Tablets (Replaced by AT050) Sale price£17.64 Regular price£19.60
Palintest Photometer Replacement Cells for 9 in 1, 25 in 1, 7100 & 7500Palintest Photometer Replacement Cells for 9 in 1, 25 in 1, 7100 & 7500
Palintest
Palintest Photometer Replacement Cells for 9 in 1, 25 in 1, 7100 & 7500 Sale priceFrom £7.50
PoolLab Alkalinity-M Photometer TabletsPoolLab Alkalinity-M Photometer Tablets
WATER-I.D.
PoolLab Alkalinity-M Photometer Tablets Sale priceFrom £8.30
Save £3.52
Palintest DPD No 3 250 ReagentsPalintest DPD No 3 250 Reagents
Palintest
Palintest DPD No 3 250 Reagents Sale price£19.98 Regular price£23.50
Lovibond DPD No 1 Rapid Dissolve TabletsLovibond DPD No 1 Rapid Dissolve Tablets
Lovibond
Lovibond DPD No 1 Rapid Dissolve Tablets Sale priceFrom £11.95
On sale
Palintest Ammonia ReagentsPalintest Ammonia Reagents
Palintest
Palintest Ammonia Reagents Sale priceFrom £47.88 Regular price£53.20
On sale
Palintest Calcicol Calcium Hardness ReagentsPalintest Calcicol Calcium Hardness Reagents
Palintest
Palintest Calcicol Calcium Hardness Reagents Sale priceFrom £35.28 Regular price£39.20
Save £49.52
Lovibond MD110 Pool Control 6 in 1 PhotometerLovibond MD110 Pool Control 6 in 1 Photometer
Lovibond
Lovibond MD110 Pool Control 6 in 1 Photometer Sale price£495.55 Regular price£545.07
On sale
Palintest XF Extended Free Chlorine Range Photometer ReagentsPalintest XF Extended Free Chlorine Range Photometer Reagents
Palintest
Palintest XF Extended Free Chlorine Range Photometer Reagents Sale priceFrom £14.67 Regular price£16.30
On sale
Lovibond Total Alkalinity Count TabletsLovibond Total Alkalinity Count Tablets
Lovibond
Lovibond Total Alkalinity Count Tablets Sale priceFrom £13.56 Regular price£15.59
Lovibond 100ml Shaker Tube
Lovibond
Lovibond 100ml Shaker Tube Sale price£7.82
On sale
Palintest Nitrate (Nitratest) Photometer ReagentsPalintest Nitrate (Nitratest) Photometer Reagents
Palintest
Palintest Nitrate (Nitratest) Photometer Reagents Sale priceFrom £56.43 Regular price£62.70
PoolLab DPD No.3 ReagentsPoolLab DPD No.3 Reagents
WATER-I.D.
PoolLab DPD No.3 Reagents Sale priceFrom £5.95
Save £6.94
Palintest Glass Test Tubes Suitable for Lumsio, 3,4,6, Expert PhotometersPalintest Glass Test Tubes Suitable for Lumsio, 3,4,6, Expert Photometers
Palintest
Palintest Glass Test Tubes Suitable for Lumsio, 3,4,6, Expert Photometers Sale priceFrom £7.29
Save £11.34
Lovibond Water SamplerLovibond Water Sampler
Lovibond
Lovibond Water Sampler Sale price£75.73 Regular price£87.07
On sale
Palintest pH (Phenol Red), Photometer ReagentsPalintest pH (Phenol Red), Photometer Reagents
Palintest
Palintest pH (Phenol Red), Photometer Reagents Sale priceFrom £11.16 Regular price£12.40
Save £100.05
Palintest Lumiso Pooltest 6Palintest Lumiso Pooltest 6
Palintest
Palintest Lumiso Pooltest 6 Sale price£566.95 Regular price£667.00
On sale
Lovibond DPD No.3 Total Chlorine TabletsLovibond DPD No.3 Total Chlorine Tablets
Lovibond
Lovibond DPD No.3 Total Chlorine Tablets Sale priceFrom £12.50 Regular price£14.37

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