So rather than just differentiating from my color print/negative processing using adjectives like "good" or "poopy looking" I'm searching for a more scientific test. I just purchased an automatic densitometer on ebay and I'm just checking over some things here. I don't know if anybody has used these things and could help me here. I'm just gonna throw some stuff out there. So control strips are expensive...I'm just going to have to deal with that. So the general idea is that I process my control strip using my normal method and use this densitometer to compare the reference strip to that one. I can use some sort of gigantic trouble shooting table to diagnose my problem based on which of the numbers are going which way. Is this overkill? I'm processing in small tank with one shot use of the developer, so I assume any problems that I get are caused by temperature/agitation issues. Say my tank processes at 101. Is this going to show up on control strips? The only thing is that if I am botching the processing right now, I would kindof like to know that... anybody have some control strips they won't be using???