Programmable membrane dosing pump, microprocessor controlled for dosing of chlorine and silver ions in manual mode / proportional injection multiplier (1 xn) / proportional injection multiplier with memory (1 xn-M) / proportional injection divisor (1: n). Complete with 10/ 20/ 30 / 60 / 100 / 230 / 31 S / 500- and 1000-liters polyethylene tank, dosing pump and level probe to stop the dosing pump in case of lacking chemical. Easy connection to an injection counter and to a float gauge (optional).