For safety, and to protect your 10-year guarantee, use only these specific products in the microwave.
Other Tupperware products are not guaranteed for microwave use, and could be damaged in the microwave.
L94 UltraPro Loaf Pan 1.8L
L95 UltraPro Oval Set
MicroCook Jugs set (2)
P01 Micro Pro Grill and Ring *10% OFF*