DPD 1 A Liquid Reagent for Free Chlorine

Overview

DPD 1 A liquid reagent measure free chlorine, the fraction of the residual still available to disinfect. The reagent gives a pink colour whose depth the instrument converts to a reading, which makes this the everyday check on potable water plants, reticulation systems, pools and cooling circuits.

Key features

• Reads free chlorine, the disinfecting fraction, rather than total chlorine
• Ready-made reagent, so there is no weighing or dilution on the bench
• Supplied in 30 ml and 65 ml sizes, each with its own item code

DPD 1 A liquid reagent specifications

Applications

Potable water disinfection and SANS 241 monitoring, reticulation and reservoir sampling, swimming pools and spas, cooling towers, and food and beverage plants.

Why buy DPD 1 A liquid reagent from Hadron Group

Hadron Group supplies water treatment chemicals, dosing equipment and analytical products throughout South Africa and the SADC region. We hold DPD 1 A liquid reagent in stock, we can supply the matching photometer, cuvettes and spares, and our technical team will help you settle on the right test set for your plant. Browse the full reagent range or ask us for a quote.

Frequently asked questions

What is the difference between free and total chlorine?
Free chlorine is what is still available to disinfect. Total chlorine adds the combined fraction that has already reacted with ammonia and organics, and the gap between the two is the combined chlorine.

Does this reagent work on its own?
Several photometric methods use two or three reagents in sequence. Check which components your method lists, and we will make sure the set is complete before it ships.

How should liquid reagents be stored?
Cool, dry and out of direct sunlight, with the cap firmly closed. Note the batch and expiry on the bottle, and work through the oldest stock first.