Sources of Contamination

• Introduced with the raw material and from the process equipment (e.g. rust)

• Generated from the manufacturing process and various refining activities

• Some amount of polymerization of the refined MDI in the storage tanks

Filtration Sections

• Filtration of refined MDI prior to delivery / loading

• Filtration of raw material

Recommendations

• Strainers / Metal filters within the manufacturing process. Requires high temperature components. 

• FCN cartridge