#1 Kraft (Used Brown Kraft)
Paper grade definitions are either the same as, or largely derived
from the ISRI Scrap Specifications Circular published by the
Institute of Scrap Metal Recycling Industries Inc.
Consists of baled brown kraft bags free of objectionable lineers
and original contents.Prohibitive materials are not permitted.
Total outthrows may not exceed 1/2 of 1%.