Archival Intercept®  neutralizes oxidizing gases in the air such as ozone, carbonyl sulfide, sulfur dioxide, hydrogen chloride, nitrogen dioxide and hydrogen sulfide and bonds the gases to the Archival Intercept sheet.  Intercept reacts with and permanently neutralizes oxidizing gases. Intercept is also an effective passive fungicide and bactericide.

Testing done at DuPont and AT&T determined that under normal levels of atmospheric sulfur and chlorine, .001 inch of Intercept film would neutralize the gases for more than 10 years. As the gases attempt to permeate the Intercept film, they encounter the active copper attached to the polymer end chains and are reacted and permanently neutralized.