text: Foam, entrained and dissolved air that are present in coolants and processing liquids, may cause various kinds of problems, including:
  * Reduction of pump efficiency (cavitation)
  * Reduced capacity of pumps and storage tanks
  * Bacterial growth
  * Dirt flotation / deposit formation
  * Reduced effectiveness of the fluid solution(s)
  * Eventual downtime to clean tanks
  * Drainage problems in sieves and filters
  * Formation problems (i.e. in a paper mill it may cause the fibers to form an inhomogeneous sheet)
  * Cost of replenishing the liquid
  * Cost of entire material rejection due to imperfections