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Lovibond DPD No. 3 Rapid Dissolve Tablets are premium-quality reagents specifically designed for the accurate measurement of total chlorine levels in water.
These tablets are an essential component of the DPD testing method and are used after the addition of DPD No. 1, to determine the total chlorine concentration in pools, spas, and other water systems.
The rapid dissolve formulation ensures quick and complete dissolution, providing fast and reliable test results.
These tablets are suitable for comparator methods of testing.
The compatibility with Lovibond comparators makes these tablets an essential tool in maintaining optimal water quality and safety.
Different box sizes are available:
511292BT: 500 pack
511291BT: 250 pack
511290BT: 100 pack
511291-1BT: 50 pack

Frequently Asked Questions
Clear answers to help you choose the right water testing solution with confidence
Which brands of water testing kits do you supply?
Do you provide kits for both home and professional use?
Yes — whether you’re a pool or spa owner, aquarium keeper, utility company, or a university laboratory, we have the right solution for your needs.
Can I arrange servicing or calibration for my photometer?
Absolutely. We also provide servicing and calibration to keep your photometers accurate and reliable.
How quickly do you dispatch orders?
Orders placed before 2:30 pm (Monday–Friday) are dispatched the same day. We also ship on Saturdays for your convenience.
Which couriers do you use for delivery?
We deliver through UPS, DPD, and Royal Mail. You can also choose to upgrade to next-day delivery at checkout.
What is your return policy?
We accept returns within 14 days of delivery provided the items are unused, in their original packaging, and in resalable condition. Please contact our team before returning any items.
Can I place bulk or business orders?
Yes, we welcome bulk, trade, and institutional orders. For tailored pricing or large quantities, please get in touch with us directly.
How can I get help if I’m unsure which kit to buy?
You can call us at 📞 +44 (0)115888 2726 and our team will guide you in choosing the most suitable kit for your needs.