Quote Originally Posted by Gerald C Koch View Post
It helps to label the developer and fixer containers. A good last minute check of the liquid's odor before use also helps. Fixer has a distinctive smell.
Yes, mark your containers.
I have three glass measuring cups, bought from Wal-Mart. (I use them for mixing and pouring, not measuring. I use them because they have handles.)
Using paint markers, I put labels on them and nothing else ever goes in those cups except what's on the label.

Ever notice how doctors and nurses in hospitals always read the medicine bottle twice before giving anything to a patient?
Wouldn't hurt to develop that habit in the darkroom.