Avantage TechTip No. 9 From Anderson and Vreeland

As the matte finish on the upper and lower glass frames of an exposure unit wears down from contaminants over time, air will be prevented from escaping. This may result in a poor lower vacuum seal between the cover film and the negative, or may result in a poor upper vacuum seal. In this month’s AVantage TechTip from Anderson and Vreeland, an outline is provided of the recommended cleaning procedures to correct the problems caused by contaminants. Click here to learn more.