Review on 🥣 Stainless King Vacuum-Insulated Food Jar, 24 oz, Midnight Blue - THERMOS by Vanessa Campbell

Double-walled steel vacuum containers have become fully marketable. We got this and the "Energify" container and compared their efficiency. In terms of materials and construction, the thermos is indistinguishable from inexpensive generics like Walmart's own brand Ozark Trail. Presumably they are all made in China in the same factories and to the same quality standards at the same prices. Materials: 1 Thermos 1 Energify container 1 Double-walled universal beaker with a temperature of 190°F Methods: Room temperature measurement Beaker filled with warm water with a temperature of 120°F for base thermometer Fill both Vacutainers with hot water from the boiler 12 and 33 hours Two readings in a tank over a period of time, with the thermometer being reset between readings using warm water. Results: I will add charts soon. The main conclusion is that the temperature decay curves fit very closely to the ideal Newtonian model of exponential decay with a constant of -1/22h. This means that for both Vacutainers, half the heat (or cold) is lost in 15 hours. This performance seems typical. So in terms of heat output, normal containers at reasonable prices. The materials, especially the lid, are unremarkable. 3+1 stars for about the same price as comparable vacuum containers from Walmart.