We are all aware of ISMP's targeted safety best practice 6 to avoid glacial acetic acid, which has been archived since 2020. Attached is the NAN alert from 2013.

I always thought we had this best practice squared away, since we don't use glacial acetic acid. However, I realized that our OR uses acetic acid 4%, which we obtain for them from a chemical supply company, since our wholesaler only has the 0.25% product.