Samovars were cleaned with bricks. In the past, they were cleaned with abrasive materials — fine wet sand or ash. Even grated bricks were used. Samovars were sold by weight. In the early 19th century, the price of a samovar depended on its weight and the material it was made from. A heavy weight indirectly indicated the quality of the samovar: thick walls lasted longer than thin ones, the water inside cooled more slowly, and dents appeared less frequently. The largest samovar is designed for 2,000 people! It holds 555 liters of water. The samovar was made of stainless steel in 2014 in Perm and was noted in the “Russian Book of Records.” There were also models for individual use. Samovars for one glass were called “egoist.” Those for two glasses were called “tête-à-tête.” For the children of Emperor Nicholas II, Tula craftsmen made five samovars with a capacity of one glass in 1909. Today, they can be seen in the “Tula Samovars” museum.