Deprecated: Non-static method iPaper::getFolder() should not be called statically in /home/clients/17bf33fcb170a70422e73a7d77971c1b/newweb/wordpress/wp-content/plugins/ipaper/ipaper.php on line 934

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; oQey_Gallery_Widget has a deprecated constructor in /home/clients/17bf33fcb170a70422e73a7d77971c1b/newweb/wordpress/wp-content/plugins/oqey-gallery/gallcore.php on line 29

Deprecated: Function create_function() is deprecated in /home/clients/17bf33fcb170a70422e73a7d77971c1b/newweb/wordpress/wp-content/plugins/video-playlist-and-gallery-plugin/wp-media-cincopa.php on line 319
Chromium alum - Technical Collotype

Chromium alum

CHEMICALS USED FOR COLLOTYPE

Chromium alum

Used to tan the gelatin, to increase its resistance, to eliminate its power hygrophile,…