# Acid tower (aka)

- By: André Karwath aka Aka
- Date: 5 March 2006
- Classification: Photograph
- Museum: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Acid_tower_(aka).jpg)
- Rights: [CC BY-SA 2.5](https://creativecommons.org/licenses/by-sa/2.5)
- Picture: https://upload.wikimedia.org/wikipedia/commons/thumb/8/88/Acid_tower_%28aka%29.jpg/1920px-Acid_tower_%28aka%29.jpg
- Who can see it: Kids profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

This image shows an "acid tower" as formerly used for producing paper. The tower was used for the production of calcium bisulfite from sulfur and limestone. Crossen, Zwickau, Saxony, Germany.