The Bilt OSCAR 300 is the largest of the in-tank OSCAR softener pouches, sized for reservoir espresso machines that get heavier use or live in harder-water regions. It works the same way as the OSCAR 90 and 150 - cation exchange resin pulls calcium, magnesium, and other scale-forming minerals out of the water, so your boiler, group, and steam paths stay clean for longer.

Drop the pouch into the water tank, top up with cold water, and the softener begins working immediately. The OSCAR 300 treats up to 300 litres of water before it needs to be replaced, which makes it the right choice for cafe-style daily volume on a reservoir machine, or for any home setup with notably hard water. Replace on schedule to avoid descaling cycles and to extend the life of your machine.

If you have not been treating your water yet, the OSCAR family is the easiest entry point - no plumbing, no fittings, just better water in, better espresso out.