Water For Injection (WFI System)
Water for Injection (WFI) is a unit operation, It Helps to reduce Conductivity, Heavy metals, Nitrates and TDS at very high Concentration.
Process Description :-
WFI is a combination of Distillation and Reverse Osmosis. Water For Injection System (WFI) can be created through distillation and through further purification by Reversed Osmosis. The more common method is through distillation, which is an intrinsically safe method. If a distiller would fail or produce insufficient heat, there is no evaporation and no WFI generation. Whilst the use of RO and polishers can generate WFI, it is a cold process and not intrinsically safe as seal ruptures or membrane failures are not easily detectable without the use of additional equipment such as inline micro or endotoxin monitors.
Target Impurities :-
- Conductivity
- Heavy metals, Nitrates
- TDS
- Free Radical Ions
Advantages :-
- For any dissolved salts Rejection upto very 99.9%.
- Quality of treated water is very good.
- Low Opex cost
