<prompt> Chlorine demand of water determined by -Horrocks apparatusChloronometreBerkefield filterDoble Pot  <response>: Horrock ;s water testing apparatus is designed to find out the dose of bleaching powder required for disinfection of water Contents 6 white cups One black cup with a circular mark inside 2 metal spoons 7 glass stirring rods One special pipette Two droppers Starch-iodine indicator solution Instruction folder refer pgno:729 park 23rd edition 