"Quart"?????? AC-25-QT Typical Application-? Breathing Air Purification & Gas Sweetening Activated Carbon- for Pollution Control. L- Factor Carbons are among the most powerful absorbent available due to their base composition, high density, low dust, and high capacity characteristics. This media is your choice for absorbing both condensable and vaporous hydrocarbons (lubricants) and L-Factor Carbon is quite effective in cornering odors, organics, as well as halogenated solvents.