It pH adjustment is used in many situations. Within the pool worldbut certainly in the horticulture and industry. 
This complete set is a simple but effective proportional pH control. The supplied pH sensor is screwed with the sensor holder into a drilling saddle or T-piece and ensures that the onboard pH regulator in the dosing pump can measure the pH of the liquid. The desired pH is achieved by dosing acid or lye. 

The complete PVDF configuration ensures a long service life, even at higher acid concentrations. The VMS PO is equipped with a very convenient float function on the intake filter. This switches the pump off when the vessel is empty, so that the entire pipework does not become empty. You can also get this alarm signal externally and link an alarm to it.

The Emec VMS PO has a manual bleed.