Glass cookware like Pyrex
These types of glass products cannot be accepted for recycling because the type of glass used in microwave plates, pyrex and plate glass melts at a different temperature from the glass used for bottles and jars. This means that if the plate, pyrex or microwave glass is mixed with bottle and jar glass it causes imperfections in the end product. If plate glass or pyrex enters the glass recycling process it can result in new containers being rejected. It is therefore not something that either the smelting plant or the manufacturers want and it should therefore not be included in your recycling.