All accessions to the main or subsidiary collections must be logged into OSAC accessions database, giving at least some notion of how many specimens there are, where they are from, what taxa they represent, and what condition they are in. The more detail the better. Specimens incorporated into OSAC must be of high quality. In general, only complete, well-preserved specimens with full label data will be accepted. Staff will offer advice on preparing specimens to meet these criteria.
Printed labels are preferable to hand-written labels , particularly for small specimens.
Hand-written labels should be written with indelible ink. Specimens from Oregon and the Pacific Northwest will have the highest priority, except as noted below. Mass samples from pitfall traps, malaise traps, black lights etc. OSAC does not guarantee the preservation of accessioned mass-sampled material in perpetuity. Vouchers provide hard evidence of what taxa were studied and allow the reinvestigation of problems in the future.