Best way to store raws

I have all my raws stored in a ziplock bag. I have about 27 grams of NPP/Deca and 30 grams of test C powder. Is there a good storage method to keep them as pure as possible?
 
I split my raws into individual 5 mil mylar bags with an excess of oxygen absorbers in each bag. Each bag has about a 1 year supply in it. This is done so that I don't have to constantly open up one big bag and constantly expose it to oxygen, light, etc.

All those small bags are then put into one huge 5 mil mylar bag, and that big mylar bag has an excess of oxygen absorbers in it as well. This is incase a leak develops in one of the smaller bags. I then seal the large bag, put it in a box, and put it in my freezer.

Note that the amount of oxygen absorbers needed depends on the size of the bag it's going in.

This is my first time storing raws, but I read up on how to store powdered dry goods for long term and this is how it is done. Considering testosterone is a very stable compound, this should work fine. I plan on sending a sample for testing to jano every time I have to open a new bag for brewing. So about once a year or so. This is to make sure it hasn't degraded.
 
Oh yeah, some mylar bags have a little see through window so you can see the inside. Do NOT get these ones. You want the ones that are completely opaque. This is to protect the inside from light.
 
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