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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6025 products

Kuntze Zirkon pH Sensor
Kuntze Instruments
Kuntze Zirkon pH Sensor Sale price£97.44
LaMotte Insta-Test Magnesium Test Strips
LaMotte
LaMotte Insta-Test Magnesium Test Strips Sale price£17.00
pH Indicator Strips 0 - 14pH Indicator Strips 0 - 14
Johnson Analytica
pH Indicator Strips 0 - 14 Sale price£4.05
Palintest Kemio Service & Test
Palintest
Palintest Kemio Service & Test Sale price£325.00
Save £17.85
Palintest Contour Comparator Kit Chlorine 0 -2 mg/l / pHPalintest Contour Comparator Kit Chlorine 0 -2 mg/l / pH
Palintest
Palintest Contour Comparator Kit Chlorine 0 -2 mg/l / pH Sale price£101.15 Regular price£119.00
On sale
Palintest Chlorine DPD 1 & 3 Extended TabletsPalintest Chlorine DPD 1 & 3 Extended Tablets
Palintest
Palintest Chlorine DPD 1 & 3 Extended Tablets Sale priceFrom £34.11 Regular price£37.90
On sale
Palintest Ammonia TubetestsPalintest Ammonia Tubetests
Palintest
Palintest Ammonia Tubetests Sale priceFrom £81.52 Regular price£95.90
Save £0.70
Lovibond Light Shielding Ring for round vials 24mm, set of 12Lovibond Light Shielding Ring for round vials 24mm, set of 12
Lovibond
Lovibond Light Shielding Ring for round vials 24mm, set of 12 Sale price£4.70 Regular price£5.40
Lovibond DPD No 1 Liquid Buffer Solution
Lovibond
Lovibond DPD No 1 Liquid Buffer Solution Sale price£22.61
Test All Water 200g Trichlor Stabilised TabletsTest All Water 200g Trichlor Stabilised Tablets
TEST ALL WATER
Test All Water 200g Trichlor Stabilised Tablets Sale priceFrom £10.37
Kuntze Bowl Filter Assembly
Kuntze Instruments
Kuntze Bowl Filter Assembly Sale price£74.33
PoolLab Mixed-Refill Pack
WATER-I.D.
PoolLab Mixed-Refill Pack Sale price£7.50
Save £62.00
Palintest Total Arsenic SensorsPalintest Total Arsenic Sensors
Palintest
Palintest Total Arsenic Sensors Sale price£365.00 Regular price£427.00
Biospot Effervescent Chlorine TabletsBiospot Effervescent Chlorine Tablets
Biospot
Biospot Effervescent Chlorine Tablets Sale priceFrom £8.72
Electronic TDS MeterElectronic TDS Meter
WATER-I.D.
Electronic TDS Meter Sale price£36.58
Palintest Standard Service & Test- Turbidity Meter
Palintest
Palintest Standard Service & Test- Turbidity Meter Sale price£255.00
Lovibond Duo Pack : DPD No 1 Rapid/Phenol Red RapidLovibond Duo Pack : DPD No 1 Rapid/Phenol Red Rapid
Lovibond
Lovibond Duo Pack : DPD No 1 Rapid/Phenol Red Rapid Sale price£33.60
Save £7.98
Lovibond COD Vials Mercury Free 0-1500mg/lLovibond COD Vials Mercury Free 0-1500mg/l
Lovibond
Lovibond COD Vials Mercury Free 0-1500mg/l Sale price£53.37 Regular price£61.35
La Motte Insta-TEST® Monopersulfate (MPS), Alkalinity, pH Test StripsLa Motte Insta-TEST® Monopersulfate (MPS), Alkalinity, pH Test Strips
LaMotte
La Motte Insta-TEST® Monopersulfate (MPS), Alkalinity, pH Test Strips Sale price£7.25
Safe Swim Meter Reagent DPD-1 Free Chlorine
ITS
Safe Swim Meter Reagent DPD-1 Free Chlorine Sale price£12.44
Oasis 5000 Water Purification TabletsOasis 5000 Water Purification Tablets
Oasis
Oasis 5000 Water Purification Tablets Sale priceFrom £22.28
Hyzyme Natural Septic Tank Treatment 2kg
Hyzyme
Hyzyme Natural Septic Tank Treatment 2kg Sale price£59.64
TTC/ECOLI & Pseudomonas DipslidesTTC/ECOLI & Pseudomonas Dipslides
DTK-TAW
TTC/ECOLI & Pseudomonas Dipslides Sale priceFrom £27.32
Peracetic Acid 0 - 160 Test StripsPeracetic Acid 0 - 160 Test Strips
Johnson Analytica
Peracetic Acid 0 - 160 Test Strips Sale price£6.58

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