“Verdi” four flap ennclosures are made
from a single sheet of Duralong Cotton
paper, adhesive free. Duralong Cotton is
a 100% cotton, unbuffered,
high-purity paper, containing no chemicals
whatsoever. It`s produced with a "round machine";
with this type of processing the paper is not too pressed
(un-calendered) very porous to allow maximum air
flow and prevent any potentially harmful build up
of gases.“Verdi” four flap ennclosures are fitted
with a double crease (2 mm) to make
folding easier, ideal for the storage
of glass plate negatives. Photographic
glass plates can be safely stored with
no risk of pressure marks and can also
be viewed, without being removed from
their protective coating, by just unfolding
the flaps and leaving the plate
untouched, safely on a flat surface.
TECHNICAL SPECIFICATIONS
• 100% pure cotton fibre
• Unbuffered
• pH 6.7 - 7,0
• Uncalendered surface to allow maximum airflow
• Sulfur <0,0001%