1) Pls remove the lid during microwave oven and dishwasher use. 2) Do not heat the container empty or long time. 3) Do not keep the glass container with frozen dishes directly in a hot oven as it may damage the container. 4) Do not keep the glass container on wet surface or wash when it is hot. 5) Improper handling of lid could cause defects, handle the lid with care and do not bend. 6) Do not immerse the lid into boiling water, for sterlisation hot water can be used. 7) Do not use abrasive cleaners or scouring pads for cleaning.