Reverse Osmosis systems are used to produce pure water which provides a stable base before other liquids, scents and colours are added.
Polyethersulfone Absolute Pleated Cartridges are typically used in the final stages of bottling for cosmetics and toiletries.
Face powders are compressed in large units and vent filtration is used on the tops of the filling tanks.
Pure water is used in the make-up of liquid soap and therefore Deionisation (DI) or Reverse Osmosis (RO) is required depending on the quality of water desired.
When making lotions and shampoos, muslin was traditionally used as filtration, however this can be replaced by Bag Filters as a high surface area option with greater efficiency. Bag filtration is used in the early stages to remove large deposits of unmixed product and anything that could produce an uneven finish. These are typically housed in Stainless Steel Housings due to the pressure and temperature involved.
Generally for mouthwash filtration, Absolute Glass Fibre Pleated Cartridges (PPG) are used to give an excellent finish. Liquid is pumped at high pressure and temperature to avoid peppermint crystals forming in the filling lines, making Stainless Steel Filter Housings the preferred choice.
Toothpaste is filtered through Stainless Steel Mesh Cartridges prior to packaging because the fluid is extremely viscous and the filter cartridges are cleanable and reusable.
Stainless Steel Cartridges (typically 50µm) are used to remove bulk particulate. High efficiency Polypropylene Bag Filters (typically PPP) or Polyethersulfone Absolute Pleated Cartridges (PPPES) are then used as final polishing filters. At the bottling halls the product may be filtered once again to ensure no particulate remains before packaging.