Our DPD No.3 Products are specially formulated reagents used to measure total chlorine levels in water. Used after DPD No.1 in testing, they help determine the combined chlorine present, ensuring a complete picture of your water’s disinfection status. Ideal for pools, spas, and water treatment systems, these reagents make testing straightforward, reliable, and accurate—helping you maintain clean and safe water with confidence.
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39 products
Trace2o
Chlorine (DPD No 1 & 3) 250 Tablets
Sale price£27.41
Lovibond
Lovibond RTK002 Total Hardness Rapid Test - MR
Sale price£9.52
Lovibond
Lovibond DPD 3 Solution (Red bottle)
Sale price£47.59
DTK-TAW
DPD Total Chlorine Pillows, 10ml Sample
Sale price£32.94
Trace2o
DPD No 3 Chlorine Photometer Tablets
Sale priceFrom £6.42
Trace2o
Chlorine (DPD No 1 & 3) 50 Tablets
Sale price£6.07
Trace2o
Test All Water Chlorine (DPD No 1 & 3) 100 Tablets
Sale price£20.84
Hanna Instruments
Hanna Instruments-HI-711-25 Reagents For HI-711 Total Chlorine Checker
Sale price£12.16
Regular price£12.80
Hanna Instruments
Hanna Instruments HI-761-25 Reagents for HI-761 Total Chlorine Low Range Checker
Sale price£12.73
Regular price£13.40
ITS
Safe Swim Meter Reagent DPD-3 Combined Chlorine
Sale price£9.29
Lovibond
Lovibond DPD No 3 Liquid Reagent Solution
Sale price£22.61
Regular price£25.99
WATER-I.D.
Water-I.D DPD No.3 Rapid Tablets
Sale priceFrom £5.95
Hanna Instruments
Hanna Instruments-93711-01 Total Chlorine Reagent, DPD Method Expiry 03/26
Sale price£4.99
Regular price£33.50
Lamotte
La Motte Insta-Test 6-Way Drinking Water Test Strips Expired 04/26
Sale price£6.99
Regular price£27.55