In the qing dynasty Blue and white youligong red tray

• auction

Blue and white glaze red，commonly known as blue and white plus purple，is a decorative technique of porcelain with red and painted patterns between blue and white glaze. Blue and white refers to the use of blue and white materials to depict patterns，and then apply transparent glaze，with a high temperature of about 1300C firing a glaze color. Glaze red refers to the color material prepared with copper oxide (bronze flower) as the colorant，which depicts the pattern on the body (or first applies the green and white glaze to the body of the body)，then covers a layer of blue and white glaze，and then packs it into the kiln. Through the strong reduction flame atmosphere of 1250C~1280C，the high-priced copper is reduced to low-priced copper，showing a delicate and sediment red pattern.