Multigrade Developer/Rapid Fixer Humidity Abuse

I have 5 litre jugs of Ilford Multigrade Developer, Rapid Fixer, DDX, Kodak Selenium and Rodinal in 32oz bottles respectively. All unopened.

My d/r has suffered heat/humidity problems over the winter and a bit of fungus has developed in the necks of these bottles.

Can these still be used, or sieved into amber glass jugs or are they ruined by a chemical reaction having taken place due to the heat?

Thanks.

The developer may have oxidized in the plastic; try it, as Fred Picker would have said; It is print developer; I have used darkish print developer to no huge bad end result. DDX is also suceptible to deterioration if in plastic; it is a film developer; try it on something non critical and see how it performs. Bothe these develpers will keep longer in full galss bottles, in cool dark places. Exterior fungus just shows they were in a damp place

The Rapid fixer may have sulfated out; look for a yellow precipitate; it happens to all fixers; a hot environment may accelerate the process.

The Rodinal should be ifne; it is known to last for years, but again a glass bottle would be best.

KRST in concentrated form I have never heard of dieing off.

Mike - Thanks for your response.

I will transfer all the chemicals into amber glass jugs which I have several of. Both 5 litre jugs of Fixer may have gone yellow. I will give them the sniff test. I was hoping the developer (at least) would still be usable, just wanted to make sure before I had to foot the bill for replacements.