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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Blue Horizons Total Alkalinity Raiser 5kg - Use TAPLUS5OL as alternativeBlue Horizons Total Alkalinity Raiser 5kg - Use TAPLUS5OL as alternative
Blue Horizons
Blue Horizons Total Alkalinity Raiser 5kg - Use TAPLUS5OL as alternative Sale price£18.80
Save £0.64
5ml Plastic Syringe
Palintest
5ml Plastic Syringe Sale price£5.76 Regular price£6.40
IDEXX 120ml Vessels with Antifoam (200 pack)
IDEXX
IDEXX 120ml Vessels with Antifoam (200 pack) Sale price£168.00
PoolLab / Dpd No 1, pH, CYA, TA BundlePoolLab / Dpd No 1, pH, CYA, TA Bundle
TEST ALL WATER
PoolLab / Dpd No 1, pH, CYA, TA Bundle Sale priceFrom £22.00
Lovibond Refill Pack Scuba3s - Phosphate
Lovibond
Lovibond Refill Pack Scuba3s - Phosphate Sale price£11.34
Save £0.86
Hanna Instruments FILTER HOLDER WITH LUER LOCK HI-740271Hanna Instruments FILTER HOLDER WITH LUER LOCK HI-740271
Hanna Instruments
Hanna Instruments FILTER HOLDER WITH LUER LOCK HI-740271 Sale price£16.34 Regular price£17.20
PoolLab Acidifying PT Photometer ReagentsPoolLab Acidifying PT Photometer Reagents
WATER-I.D.
PoolLab Acidifying PT Photometer Reagents Sale priceFrom £7.58
Ezetrol DES Chlorine SensorEzetrol DES Chlorine Sensor
Kuntze Instruments
Ezetrol DES Chlorine Sensor Sale price£285.78
FoodSaf Salad Wash Tablets 0.4gFoodSaf Salad Wash Tablets 0.4g
FoodSaf
FoodSaf Salad Wash Tablets 0.4g Sale priceFrom £2.73
Hyzyme Natural Septic Tank Treatment 4kg
Hyzyme
Hyzyme Natural Septic Tank Treatment 4kg Sale price£118.39
Kuntze Zirkon DES Sensor (Chlorine Sensor)
Kuntze Instruments
Kuntze Zirkon DES Sensor (Chlorine Sensor) Sale price£343.25
Save £1.04
Hanna Instruments-707-25 Nitrite Low Range (0-600 PPB) Reagents 25 Tests
Hanna Instruments
Hanna Instruments-707-25 Nitrite Low Range (0-600 PPB) Reagents 25 Tests Sale price£19.86 Regular price£20.90
Eutech Expert pH Pocket TesterEutech Expert pH Pocket Tester
Eutech
Eutech Expert pH Pocket Tester Sale price£79.52
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Lovibond pH Buffer Solutions 7Lovibond pH Buffer Solutions 7
Lovibond
Lovibond pH Buffer Solutions 7 Sale priceFrom £3.88 Regular price£4.46
Save £43.80
Palintest/Watgetch Membrane Filtration Unit
Palintest
Palintest/Watgetch Membrane Filtration Unit Sale price£248.20 Regular price£292.00
LaMotte Chlorine DPD no.1 ColorQ Tablets (100)LaMotte Chlorine DPD no.1 ColorQ Tablets (100)
LaMotte
LaMotte Chlorine DPD no.1 ColorQ Tablets (100) Sale price£18.00
Save £3.71
Lovibond Ammonia No.2 Tablets
Lovibond
Lovibond Ammonia No.2 Tablets Sale price£24.81 Regular price£28.52
Blue Horizons 200g Large Stabilised Chlorine Tablets- Use CLTAB2002OL / CLTAB2005OL if out of stockBlue Horizons 200g Large Stabilised Chlorine Tablets- Use CLTAB2002OL / CLTAB2005OL if out of stock
Blue Horizons
Blue Horizons 200g Large Stabilised Chlorine Tablets- Use CLTAB2002OL / CLTAB2005OL if out of stock Sale priceFrom £10.22
Pro-Swim Bromine Tablets
Pro-Swim
Pro-Swim Bromine Tablets Sale priceFrom £20.85
Save £116.10
Palintest Lumiso OzonePalintest Lumiso Ozone
Palintest
Palintest Lumiso Ozone Sale price£657.90 Regular price£774.00
Stabilised Ultimate Multifunctional Chlorine GranulesStabilised Ultimate Multifunctional Chlorine Granules
TEST ALL WATER
Stabilised Ultimate Multifunctional Chlorine Granules Sale priceFrom £14.99
Hot Tub & Spa Total Alkalinity Plus (Sodium Bicarbonate)Hot Tub & Spa Total Alkalinity Plus (Sodium Bicarbonate)
TEST ALL WATER
Hot Tub & Spa Total Alkalinity Plus (Sodium Bicarbonate) Sale priceFrom £6.14
Lovibond Silica PR Tablets FoilLovibond Silica PR Tablets Foil
Lovibond
Lovibond Silica PR Tablets Foil Sale price£22.40
Probe Filling Electrolyte Oxel - 03 [For DO Probe] 30ml GelProbe Filling Electrolyte Oxel - 03 [For DO Probe] 30ml Gel
TEST ALL WATER
Probe Filling Electrolyte Oxel - 03 [For DO Probe] 30ml Gel Sale price£14.11

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