About DPD Tablets:DPD tablets are used with comparators and photometers to measure Chlorine levels in water.
DPD 1 measures free (residual) Chlorine, the Chlorine available to kill bacteria and other water pollutants.
DPD 2 measures Monochloramine, a less effective and less widely used disinfectant than Chlorine.
DPD 3 measures combined Chlorine – this is the Chlorine that has combined already with other molecules in the water and thus cannot be used for further disinfection of the water. You can add DPD 3 to the same sample as DPD 1 and you will be able to calculate the total Chlorine.
DPD 4 is used to measure total Chlorine only.
DPD tablets can accurately measure Chlorine levels from 0.001 mg / l to 10 mg /l. When a sample has a chlorine level that is higher than 10, the colour is bleached out of the Chlorine tablet – there is a quick show of pink colour and then the sample returns to its original colour. Dilutions can be done to determine high range Chlorine levels.
DPD reagents are produced on the basis of international standard methods and the ISO standard method. The chemicals are of a crystalline white nature.If a reagent (tablets or powder) is not white but has turned grey/brownish or purple in colour, it has deteriorated. The use of deteriorated products must be avoided as they will give false results.
Description of Lovibond® DPD Tablets:
Different forms of reagents are required for different fields of application. It is fair to say that, in terms of quality, tablet reagents are the best form of reagent. Each tablet is individually sealed in aluminium foil and is therefore unaffected by ambient conditions. It remains fresh right up to the time it is removed from the foil, eliminating the possibility of indicator aging.
Easy handling and precise reagent dosing when using tablets help to ensure accuracy of measurement – particularly when working in the unfavourable operating environments typically used in field testing.
The new aluminium foil blister packaging brings added convenience. With the new blister strip, the user just pushes the tablet throught the protective foil, straight into the sample. Simple, time saving and practical.
There are no safety risks if the tablets are used in line with the instructions supplied. Safety data sheets are available for all reagents.
To express the high quality standard of Lovibond® tablet reagents, specifications for each type of tablet as well as a “Certificate of Analysis” for each lot is available in the down-load area at www.tintometer.com.
Lovibond® tablets have a guaranteed shelf life of 5 years. Each tablet is individually sealed in aluminium foil and is therefore unaffected by ambient conditions. It remains fresh right up to the time it is removed from the foil, eliminating the possibility of indicator aging.
Ever wondered What Type of Reagent to Choose?