On which side should the package content be written when using paper/plastic pouches?

The package content should be written on the plastic side when using paper/plastic pouches. This choice is correct because the plastic side is typically smoother and more suitable for writing, ensuring that the text is legible and does not smudge easily. Moreover, marking the plastic side helps to avoid contamination of the sterile contents, as writing on the paper side may cause ink or other materials to transfer to the internal surfaces.

Choosing the plastic side for labeling is also in line with best practices for maintaining the integrity of the package's sterilization process. This helps ensure that, once the pouches are processed and sterilized, the labels remain intact and do not compromise the sterility of the contents, which is crucial for maintaining a safe and sterile environment.

Other potential options, like writing on the opaque side or easily removable side, may not provide the same level of clarity and permanence for labeling, leading to potential confusion in identifying the contents after sterilization. Thus, labeling on the plastic side is the preferred method for clarity and maintenance of sterility.