Though BIS has not put any restriction on manual filling, humid Indian conditions make the product susceptible to external contamination due to unhygienic conditions. Therefore, automation in post processing stage is strongly recommended. Monoblock machines, capable to rinse, fill & cap covered in one single enclosure is recommended as this ensures quick packing hence less chances of contamination through air. Monoblock machines offer small footprints and quick transport distance between filling and closing for highly secured production. As they outperform functions that normally require employment of several other machines, Monoblock machines are effectively crafted with modular designs that efficiently help to change over to different functions, product sizes and shapes. The frequency converter helps to control the production speed. The complete parts coming in contact with water i.E. Pipelines nozzles and tanks should have stainless steel construction. The caps enclosure too, should have disinfecting arrangement (UV) to avoid contamination arising out of improper disinfecting of caps at early stages. Since PET has static charge, it attracts lot of contaminants from the atmosphere and thorough rinsing is required. As jet rinsing ensures proper cleaning of PET bottles, the risk of external contamination is minimized. These machines reduce the chance of product contamination by capping containers as soon as they are filled. Direct transfer also reduces the chances of spilling. This speeds up entire process giving the consumer absolutely pure water.