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My hypothesis is that Ozone in the air can affect markedly some cyanines dyes present in the emulsion, this is absolutely correct for at least for one dye used in biochemistry (red sens. dye). However how oxygen could have some effect on the dye? By oxidation?

And this is why Ultimate plates come vacuum packed.

Still it can be useful.
Now I mainly manufacture on glass. I cover the plates 280x406 mm.
Drying the horizontal distance between the plates is 2 cm. All plates lie emulsion up. There is not very intensive blowing with dry air.
After drying, I put all the plates in cardboard boxes by laying a polyethylene tube cut along them along the edge.
But one day I made too many plates and the tubes ended.
I was too lazy to do them. I just put the plates on top of each other without gaskets.
It turned out that these plates were better preserved and when producing holograms they showed DE as if they were completely fresh.
Now I always keep glass plates so I just put them on top of each other.
So, that would dry emulsion contacted with glass.
Valery.

Perhaps Valery's post gives a clue to any latent image fading problems. When he kept the exposed film wound in a roll , there was no problem.
In a roll form there is no free access of oxygen is there? so any weakening of latent image is perhapscaused by ariel oxygen and damp air. I wonder if it would help to put exposed stuff in a container in which you could squirt in some CO2? But the easiest practical way might be to simply sandwich the exposed stuff between say plastic sheets to stop free oxygen access.

I've shot with VRP-M and developed them the next day with no real degradation. But, of course, it depends on the developing scheme, local conditions and exposure densities.

Good latent image decay test! Sounds like the material passed!

I developed an Ultimate 08 plate yesterday that I shot in a cave on 22 Sept 2013, almost eight months ago. Somehow I left it in a light tight box and forgot about it. I know the date because it was in an envelope with the date, time, beam intensities, ratio, exposure time, temp and humidity written on it. After developing but before bleaching it wasn't very dense and had some of the security pattern of the envelope on it. The image is about the same brightness as most of the others I developed in a more timely manner.

I shot some Ultimates on Saturday and developed them 22 hours later. So it looks like about a day is okay for a delay.

I shot some Ultimates yesterday and developed them last night after 14 hours. They look good. So now I know a the processing can be delayed half day, maybe more.

Possible this is connected with three reasons.

1 For fabrication of the emulsions I use only distilled water and test; his quality.
Slavich uses water does not distilled.
2 My emulsions VE 633 I use a hardening, Slavich PFG-03M this does not do
3 Films these 4 weeks convolute in roll.
Valery