The tea urn was always on for the workers
8.5 liters is 8500 milliliters, divide that by 250 and you get 4 per liter and 34 for your urn.
samovar
a kettle
1 litre = 4 cups so x it by 8.5 and theres your answer
In Russia it is called a samovar.
samovar
A metal, Russian urn used for heating water for making tea.
"Like many products, you can pay a small fortune for almost anything. If a seller can find a buyer who wants something bad enough. The most expensive tea urn I was able to find was the Bon Chef Silver Insulated Coffee Urn 48005S for $1,298."
A big kettle, to make a lot of tea, is called an urn
A russian teapot is called a samovar
The best material to look for when buying a tea urn is steel. The steel is a great metal that if shaped right can contain heat and make your tea produce faster than an aluminium urn.