Hi all. I've been storing my tomatoes (crushed) in plastic freezer containers for many years. Lately I read that some of the older containers have a substance in the plastic that is not good for us. I went through a lot of my containers and there are several types. The oldest ones are quart size and have nothing on them except something like "Product of Mobile Oil". :( Some others have just a 2 in a triangle and some of what I think are the newer ones all have the triangle with the 2, and also imprinted in the plastic is "Do not use in microwave". I'm thinking the last one I mentioned is probably the best/safest one to use. Any ideas? Thanks.