![IceCap 5 Micron CTO Carbon Block Reverse Osmosis Pre-filter](http://aquaticsuppliesusa.com/cdn/shop/products/ic_carbonblock_{width}x.jpg?v=1654986785)
CTO 5 Micron Carbon Block Pre Filter
Carbon block pre filter is often used as the second stage filtration after the sediment filter for reverse osmosis systems water purification.
The 5 µ carbon block pre-filter removes organics and chlorine from the feed water that can damage the membrane.