Medelco 12-cup Glass Stovetop Whistling Kettle 12 Cup Stove Top Whistling Kettle for Use on Electric & Gas Ranges High Quality Borosilicate Glass from DURAN, Germany Assembled in USA BPA-Free Dishwasher Top Rack Safe Product is strictly intended for boiling water as instructed. All other uses are strictly prohibited. For adult use only; close supervision is necessary when used near children.  Never leave the product unattended while in use. Use product on interior household stove top ranges only. Not for commercial use.  Do not use product on or in the following devices: oven appliance, microwave oven, fire pit, barbeque grill or fireplace grill. Do not subject product to impact as it may weaken glass and cause it to break unexpectedly during use. The Trivet included with your Kettle must always be placed on exposed Electric Range coils between the coils and Kettle glass; Trivet is not necessary for use on Gas or Glass Ranges. Do not heat or boil product if water level is below the MIN. line marking on glass. Immediately remove product from heat source once water has reached a boil.  Do not boil product dry or heat when empty, as this can damage the glass or cause the plastic components to melt. Discontinue use of product if boiled dry or heated empty. When inserting Lid into glass, align Lid handle over Kettle handle. <span class="a-text-bold"><u>FOR GAS RANGES:</u></span> use on smallest burner size available; use no higher than medium heat setting. Do not allow flame to extend beyond the bottom of the glass surface; reduce from medium to low heat setting if flame extends beyond bottom of glass surface. Consult your range instructions for heat settings. <span class="a-text-bold"><u>FOR ELECTRIC RANGES:</u></span> use product on smallest burner size available; do not place product on stovetop burner that is larger than the glass bottom surface; use no higher than medium heat setting or 250 Fahrenheit. Consult your range instructions for heat settings. Handle may become hot during use. Use of oven mitts is recommended. Failure to comply with these instructions may 1) result in damage to the glass that isn&#039;t clearly visible, resulting in breakage during use and 2) cause the plastic components to melt. If during heating/use you disregarded these instructions, or suspect the glass is damaged or plastic components may have melted 1) Do not touch or move product 2) immediately turn off heat source 3) instruct any persons who may come into contact with product not to touch or move product 4) allow product to cool for two hours 5) after two hours, using an oven mitt, carefully remove product and discard. Do not use abrasive pads, brushes, cleaners or any metal products on or inside of glass Kettle. Do not scrub any scale buildup as it may scratch the glass and result in breakage. Use a liquid descaler as directed by descaler product, but do not scrub the glass. Use only sponge, plastic or nylon wash pads with soapy water when washing by hand. Dishwasher top rack safe. Avoid Kettle contact with other items in dishwasher.