Marbles for oxygen displacement

I read somewhere about keeping the oxygen away from the chemicals by placeing a healthy squirt of butane and sealing the container with plastic and a rubber band/s
ans I have done this for 10 yrs with no noticable side affects the lasting times are quite long.
my processor chem are kept in a 5litre container and as each amount is taken out the butane is squirted in and a plastic shield is placed over the screwtop and then I screw the lid on and it lasts a long time with no
degradation of chem strength.
I have done this with e-6 and b+w chemicals
regards
Bazz8

As bazz8 mentioned, butane works well and is much less trouble than marbles. Another possible solution to the problem is using one-shot developers that you mix just before use.

What about using one of those wine stopper systems that suck the air out such as these - http://www.wineweaverstore.com/stor...es/wine-savers/vacu-vin-wine-saver-black.html

So can we now state with a relatively large amount of certainty that with our suggestions we have helped the OP lose his marbles?