In process quality control

which grade of water should be used for OSD IPQC. can we use Raw/tap water ? kindly guide on this topic.

Purified water should be used for OSD IPQC laboraotory. Generally, a “User point” in the purified water loop system is provided in the IPQC laboratory (similar to other production areas) for easy availability of purified water.

Raw water or tap water should not be used considering hardness of water and microbiological proliferation of IPQC instruments and equipment may get affected (scaling / salt deposition & microbial contamination etc.)