A TECHNOLOGICAL INNOVATIONAT C. C. S. TO MEASURE DEGREE CHLOROMETRIQUE OF THE SODIUM HYPOCHLORITE. The bleach (whose name comes from Javel, old village of the suburbs of Paris where a factory of chemicals created in 1771 was) is known since 1830 like bleaching agent in laundry and like disinfecting. It is consisted a solution of hypochlorite and sodium chloride and is useful in particular for sterilization of water (proceeded of chlorination) . Largely used all over the world to disinfect the water intended for human consumption because of its remanence, i. E. The persistence of its properties throughout distribution network. The bleach seems more effective thus than other disinfectants like ozone or even the ultraviolet rays. This use obeys nevertheless a certain number of rules to avoid a surjavellisation of the water of which the effects can be harmful with the health of the man. The company C. C. S., anxious to permanently place at the disposal of its customers the best instruments of potabilisation of water like those allowing a control as simple as effective of its quality, developed, with the collaboration of the technicians of the best laboratories of international fame specialized in this field, a testing device of the content of chlorometric degrees of bleach. At the time of its design, in addition to its performances as a measuring instrument, it was taken into account the wish of its handiness and the simplicity of its use for which a formation of short duration is nevertheless necessary. Thus was manufactured the CHLORO-SET, a compact apparatus, portable out of case and which can be used as well in straw mattress on the ground. Without another exercise that a simple digital reading on a broad screen it gives instantaneously the results of the required analysis. Available for the first time in Algeria and of exclusiveness at C. C. S. as of February 2004, the users will be able to receive all information which they wish to have concerning the CHLORO-SET and to formulate theirs possible orders by contacting the Sales management of the company whose technicians will ensure free the formation relating to its use.