Aqueous cleaning

In the commercial world there are divided opinions about whether it is advisable to use aqueous cleaning for films other than release prints. Concerns involve the high value of camera original and duping materials and the potential hazards of improper drying, such as water marks caused by poor drying or even blocking.

Aqueous cleaning is not as thorough in removing greases and oils as solvent systems. There are other drawbacks, especially concerning the stability of gelatin in decomposing films. There may also be issues regarding the water that has been absorbed into the base during cleaning not being fully removed after drying and acting as a reservoir of water, which contributes to further decomposition.