I use Baumann fabrics almost exclusively for mounts and have found the range of colors and weaves to be very satisfactory. However I have had one experience of a sharp vinegar-y smell offgassing from the fabric when unrolled from the shipping tube. Letters sent to the Baumann Switzland mill by Harry Persaud of Creation Baumann/Carnegie fabrics in NY revealed that an acetic acid-based finishing wash had been added to set the dyes.
I have hesitated to respond to your query because I haven't been able to find the response from the mill forwarded to me or to recall if it was a Unisono or a Unilargo fabric. Under any circumstance a soaking bath is recommended before using the fabric, which can be awkward with a large length. I'll certainly pass on the details relating to this matter when I find them.
Conservator in Private Practice
Adjunct Textile Conservator
The Intermuseum Conservation Association
On Feb 29, 2008, at 12:17 PM, Frisina, Ann wrote: