Click or scroll to zoom Tap or pinch to zoom Hydro-Logic micRO-75 Inline DI Replacement Post Filter by Hydro-Logic Sale $34.99 SKU 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Buy Now Clips onto the micRO as a final polishing stage. Removes any last traces of TDS to produce ultra-pure water. 1/4 in QC fittings.