Waymon Hofheins is not very ...

Waymon Hofheins is not very encouraging, apologies Chinenye.  I think I know where you are coming from - you want to measure the chlorine content without dilution - e.g. from a salt chlorine generator.  One option to consider is to use an ORP meter, but first calibrate using dilutions and titrations, and then calibrate again from time to time (other salts in the water may also affect the ORP reading).  So while titrations or DPD give the more reliable result, for continuous monitoring of the output of a chlorine from salt generator, you may want to try an ORP probe.  Not sure if anyone else can throw some experience on this??