Type I Fluids are water/glycol mixtures with a glycol content of at least 80%, which contain a corrosion inhibition package. These fluids have been used for many years to remove ice, snow and frost (De-Icing). They offer only very limited protection against further icing due to freezing precipitation. Type I fluids can be used in “single fluid” de / anti-icing operations, but are usually used in conjunction with Type II, or IV as part of a two-step de / anti-icing procedure.

Type II fluids contain at least 50% of glycol and a corrosion inhibition package. Furthermore they contain pseudoplastic thickener system which additionally protects the aircraft against Re-freezing (Anti-Icing) due to its film-forming properties. Type II fluids can be used in “single fluid” de / anti-icing operations, or can be used in conjunction with Type I as part of a two-step de / anti-icing procedure.