Each can contains roughly 1.8 lb of R-410A that is pre-blended with our UV dye and sealant and will service systems up to 6 ton. The Refrigerant in each can is the perfect amount to top off equipment with seasonal leaks. PRO CHARGE™ Refrigerant, Non-Flammable, R-410A Refrigerant, 1.8 lb Container, Can Container, Difluoromethane/Pentafluoroethane Chemical Name, Domestic