For roller mill grinds use "keltrol" 1001 as vehicle (28% of total vehicle). Suggest following propellants: 50% isobutane/50% propane blend or 75% dichlorodifluoromethane/11% trichloromonofluormethane/13% dimethylether and a special blend. Use 55% paint/30% propellant/15% propellant for best spray characteristics. Should be reduced to 15-20% vehicle solids before use with propellants.