Large Thermos Bottle Vacuum Flasks Stainless Steel Insulated Water Thermal Cup

The bigger the pot, the better the insulation. 1200ml--1600ml keep warm for about 10--15 hours 2000ml--2500ml keep warm for about 20--24 hours 3000ml--4000ml keep warm for 30-36 hours 5200ml keep warm for 36--48 hours When testing, the environment is different, the climate is different, and there will be a little error. To measure the temperature, you need to fill the lid with 100 degrees of water and screw the lid until the water becomes warm.

The test needs to be filled with 100 degrees of water for the test. If it is not filled or opened in the middle, the time to pour out the water will be relatively reduced.