These 25 sheets of 11 x 14" COT 320 Paper from Bergger are designed for different printing methods, such as, platinum, palladium, cyanotype, and other alternative processes.
This is a non-sensitized, 100% cotton, bright white paper. No brighteners have been added to the paper.
I have been printing kallitypes with Bergger Cot 320 for a couple years now and it is definitely my preferred substrate. It accepts the chemistry well and is non-reactive, so I can get the desired end color tones with my chosen developer/toner combination. The paper holds up well to extensive washing (my prints are in chemical baths alternating with washing baths for a total of 45 min. The paper is also substantial enough to dry flat so I don't need to press the prints afterward. I also love the smooth surface texture. I will continue to buy this product and highly recommend it!
This along with the 150 version are the best paper for single or multiple printing processes. Just soft enough to absorb the coatings, and produce the most even tones in platinum/palladium and well as cyanotype processes.