the glass bowls are made of the highest quality borosilicate glass and can be used in the oven or microwave at the highest temperature setting for any duration you want. no, these glass bowls are not flame proof. no, as glass is not an induction friendly material it will not work on an induction cooktop.yes, since our glass range is made of the highest quality borosilicate glass, it can be used for convection cooking in the microwave. any other ordinary glass or cheaper quality borosilicate glass can explode in convection mode.yes. since our entire glass range is made of the highest quality borosilicate glass, it is made to withstand extreme temperature differences. you do not need to first bring it to room temperature - it can go directly from microwave to fridge and back, without a single crack.yes, the glass bowls with lid are dishwasher safe.borosilicate glass is scratch proof and tougher than ordinary glass, and can be used with an electric hand blender or egg beater. yes, since our glass range is made of the highest quality borosilicate glass, you can pour boiling hot food in the glass bowl. the steam vent ensures that there is no vacuum created and the lid does not stick to the bowlStep 1: Buy any Borosil glassware. Step 2: Once received, scan the QR code on the packaging. Step 3: Fill in your details. Step 4: Get your voucher!. Step 5: Redeem your voucher on redeemyourdeals.com. T&C apply.