A druggist's fold is a method of folding a piece of paper to create a secure and tamper-evident package for storing small items such as trace evidence. To make a druggist's fold, the paper is folded in half vertically and then folded in half horizontally, creating four layers of paper. The edges of the paper are then folded inwards to completely enclose the item being stored.
The druggist's fold is a better way to store trace evidence than an ordinary mailing envelope because it provides a secure and tamper-evident package. The folded edges of the paper create a barrier that keeps the evidence inside the package and makes it difficult to tamper with or accidentally open. Additionally, the folded edges create creases that are visible if the package is opened or tampered with, providing an indication that the evidence has been compromised.
In contrast, an ordinary mailing envelope is not as secure or tamper-evident. The evidence can easily be removed or replaced without leaving any visible signs of tampering, and the flap of the envelope can be re-sealed without detection.
Furthermore, a druggist's fold can be used with standard printer paper, which is inexpensive and widely available, and it is easy to execute with minimal training.
In summary, the druggist's fold is a better way to store trace evidence than an ordinary mailing envelope because it provides a secure and tamper-evident package that is easy to execute and inexpensive.