Problem in developing LF film sheets

Hello
I usually shoot four 13 X 18 cm B&W film sheets in every session, and I develop them in a Patterson tank.
The four sheets are randomly placed in the tank reels in total darkness. Often the exposure parameters are different in the four exposures.
Is there any practical way to mark each film sheet in order to know the details that were used in each one ?

Thank you in advance
Joao

Quite a few ways, but all require good notes being taken.

One can modify the film holders to expose a unique mark on the edge of the film that one can link up to one’s notes.

One can mark the film holder itself with the developing needs of the film inside it….N+1, for example.

In my notes, I write the film holder number, all measured light values and exposure info. I also draw a tiny picture of the scene, pretty minimal, that lets me recognize the image and negative after development.

On a recent five week trip to Japan, as I emptied my holders on the trip I put them in a box in order of when they were exposed. As I worked my way through the box of film to develop them (6 at a time in a 3006 Expert Drum), I knew it was coming up and could give them their needed development.

PS…I include the rebate in my images, so modifying the film holder to mark the rebate is not a method I use.

I once had that problem/issue. The suggestion at the time was to make something like a small hole on the film magazine "flap" (the lower part that fold to hold the film. Probably a very small hole for one, two small holes for the second magazine, etc. You will need some kind of code. It depend if you are willing/able to do those marks/holes.

Take a look at this:

A QUICK & EASY SHEET FILM NUMBERING SYSTEM

Presumably you can load your film in the order you empty the holders, and as long as you know which slot in your development rack is first, then each sheet should be identifiable when you empty the tank. Why is the order random?

Thank you vaughan and Marcelo Paniagua, those sugestions will help me

grahamp: I take the sheets from the film holders and insert them in a reel with capacity for four sheets - there is no way to know which film sheet corresponds to a specific slot of the reel...

Best regards
Joao