Review on OXO Good Grips Smart Seal Container Set: 12 Piece Glass Containers for Easy Food Storage - Clear by Chad Rosier

oven safe. The problem is that most of them are made of tempered soda-lime glass. If you've ever heard of exploding glass baking pans, it was probably soda lime. This is borosilicate glass that can withstand extreme temperatures. As it turns out, borosilicate is hard to find in the US these days. Of course, the baking jars known in the US today are made from soda lime when it used to be borosilicate. Of course, if they are sold in Europe, it is still borosilicate. Please investigate. In any case, it's amazing! Easy to clean, no marinara stains and I'm sure food is a lot healthier to store than the plastic alternative even though it has a plastic lid. The seal is great, to the point where you sometimes have to press down on the center of the lid while using the protrusion on the edge to lift and break the seal. I liked my first set so much that I bought another one.