[jacaranda]

can you change the resin in all DI tanks or only some .How do i know what tank i have got.

[Davindo Cleana]

I think if you have what looks like a fire extinguisher shaped bottle which should be either blue or cream coloured, it should be reusable - you have to unscrew the top carefully - it's another thing again explaining how to change the resin
If your tank is different in shape then I am not sure