British century-old salt-glazed pottery

British century-old salt-glazed pottery Size: about 5*4.5cm, bottle mouth diameter 1.5cm These are almost the salt-glazed ink bottles and utensils made in the Victorian era. They have traces of handmade history. Each is different and each is imperfect, but it is a feeling that cannot be made by current craftsmanship. Old things It is inevitable that there are traces of handmade history, and those who can accept it will buy it again. introduce Salt-glazed pottery has a glossy, translucent and orange peel-like glaze. The glaze is formed by pouring ordinary salt into the kiln during the higher temperature part of the firing process. The sodium in the salt reacts with the silica in the clay to form a glassy coating of sodium silicate. The glaze can be colorless or colored in various shades of brown (made of iron oxide), blue (made of cobalt oxide) or purple (made of manganese oxide). The earliest production of salt-glazed stoneware was known in Rhineland, Germany, around 1400. In the 17th century, salt glaze became popular in England. In the 17th and 18th centuries, Derbyshire, Nottinghamshire, London and Staffordshire produced high-quality salt-glazed stoneware for later life. However, because the salt glaze will produce chlorine during the firing process, it will have a bad impact on the environment and the human body, so this firing method has been banned by the British government.