... of compressed inert gas(R134a or R152a) to filled in aerosol tinplate can. When spraying, strong air blows away dust ... with extended tube to reach untouched places) 1. Air duster aerosol is an inert gas that removes dust, lint, metallic oxide ... on computers,electronics,electrical,data processing appliances, office equipment,lab equipment,generaL maintenance,room clean and more Performance:Blow away ...