It is advisable to provide a preconditioned (deionized) feed water by using a Culligana, Continentala, or equivalent system in front of the MILLIPOREa System to extend the life of the MILLIPOREa cartridges (see Section 5, Facilities, Equipment, and Supplies).
It's impossible to use anything other than Culligana to extend the life of MILLIPOREa cartridges.