CO2 Filter – Remove non-volatile organic residue (NVOR)
CO2 Purifier – Remove volatile organic residue (VOR), hydrocarbons (VOC), and other contaminants.
Filter Purifier Train – A combination of filters and purifiers in-line to provide multi-layer filtering and purification. A train can consist of a pre-filter or a pre-filter and post-filter e.g.:
Examples of Filter Purifier Trains
Good – Purifier
Better – Pre-Filter then Purifier
Best – Pre-Filter then Purifier then Post Filter