Today I was topping up my brute with RODI water and noticed my TDS netter went up to 1ppm before returning to zero. I have the Vertex Puratek and have had the unit for approximately a year. I’m just wondering if I should replace my DI resin? Should I replace the carbon block and prefilter as well? I have read the RO membrane is good for a year, is this correct? The DI resin is the original that came with the vertex unit and it appears that it is changing colors.
I have attached a photo of the puratek and the DI chamber to assist in identifying if I should swap it out.
