Storing Print and negative together...

So, Since I am printing most contac prints, the negatives and prints are the same sazes, which make it very handfull to store them together, which I also believe helps protecting the negative.

But today I was looking at a folder with some prints I made about 2years ago, and it has big yeallow spots on it.

I wonder if it happene with a print that is stored together with its negative, does it can cause problems on the negative too?

Could you post a scan or a photo of the stain—I wonder if it centered, is it even, or does it touch edges? Does it look like a fixer issues, perhaps: underfixing, underwashing, or fixer residue transferring from the negative to the print? Do you use any special processes or non-standard chemistry? And finally, what do you store the prints in?

Rafal Lukawiecki said:

Could you post a scan or a photo of the stain—I wonder if it centered, is it even, or does it touch edges? Does it look like a fixer issues, perhaps: underfixing, underwashing, or fixer residue transferring from the negative to the print? Do you use any special processes or non-standard chemistry? And finally, what do you store the prints in?

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here is the photo...
I guess it was poorly washed. There is no alternative process.

But I wonder if in case it happens to prints stored together with negatives, it may cause a problem to negatives too.

I store my prints and negatives in plastic bags for office folders.

Is there a chance that the prints were stuck to each other in the stop bath and/or the fixer and the wash? Lovely pictures, by the way.

Since it is harder to achieve permanence with a print as opposed to a negative its really not a good idea to store them together. Storing them together makes it too easy to transfer chemicals from a print to a negative.

Rafal Lukawiecki said:

Is there a chance that the prints were stuck to each other in the stop bath and/or the fixer and the wash? Lovely pictures, by the way.

Click to expand...

I guess yes. It could have happened.
Thansk.

Gerald C Koch said:

Since it is harder to achieve permanence with a print as opposed to a negative its really not a good idea to store them together. Storing them together makes it too easy to transfer chemicals from a print to a negative.

Click to expand...

ok.
I will put them apart then.
Thanks.

Coincidentally, I use a way of keeping the contacts and the negs together, but not actually next to each other. I have my negs in paper sleeves (135, 120, 4x5) and the neg pages are inside archival storage boxes - the things that are used in document archives, having acid-free carton and stainless metal fixtures (no glue). I store those boxes horizontally, so the neg pages are flat, and then an archival board or foamboard divider with the contacts laid on that, or vice-versa.

The numbering of the neg sheets and the contacts match, and the total capacity of each box is relatively small, so matching the negs to contacts is pretty simple even though they are not in direct contact with each other. The archival boxes go on a metal shelving unit and stacking the boxes three high seems to be steady enough. The outside of the boxes gives plenty of space for clear labelling of the contents, however they sit on the shelf.