Question

What is the difference between 2 and 4 stage ?​

Answer 1

Explanation:

STAGE 1 - Sediment Filter to remove sediment and other particulate matter like dirt, silt and rust which will affect the taste and appearance of your water - also protects the Carbon filter.

STAGE 2 - Carbon Filter with Activated carbon to remove chlorine and/or chloramines and condition the water prior to the reverse osmosis membrane – also protects RO membrane.