MB115 mixed bed resin 500grams which is enough to re-fill a re-fillable Di cartridge, this is for the 9-3/4" drop in type of cartridge into a housing.
DI resin is an essential part of any water to be produced for marine reef use. A correctly maintained reverse osmosis system with post DI stage will give a constant zero total dissolved solids reading pure water source for the marine tank.
Suitable for all of our refillable style filter casings used in the following systems-
PSI-019B-DI-RF
