An Environmental Friendly Procedure for Photometric Determination of Hypochlorite in Tap Water Employing a Miniaturized Multicommuted Flow Analysis Setup

Table 1

Minipumps switching pattern.

Step	Event	𝑃1	𝑃2	𝑃3	Cycles	Volume (𝜇L)
(a)	Filling flow lines	On	Off	Off	30	360
(b)	Washing flow cell	Off	On	Off	40	240
(c)	Photometer calibration	Off	Off	Off	0	—
(d)	DPD and acetate buffer insertion	On	On	Off	4	48
(e)	Sample insertion signal reading	Off	On	On	12	144
(f)	Signal reading	Off	On	Off	40	240

The number 1 and 0 indicated that respective mini-pump is switched ON or OFF, respectively. Cycles indicate the selected number of times that each valve was switched On/Off.