Storing RAM (Or any chip) in ziplocs is NOT a good practice!!!!!!!!!!!!!!!!!!!!!!!!

If you're going to store them in any kind of a plastic container it needs to have a conductive coating so there's no static buildup.

Static=ESD=dead chips.

The plastic bags they come in have a static dissipative coating on them, you might be able to find some cheap through an electronics wholesaler or ebay.