国产成人AV_成人综合网站_av在线观看网_站国产麻豆一级在线观看_麻豆乱码国产一区二区三区_国精品午夜福利视频不卡麻豆_麻豆免费观看高清完整视频_麻豆在视频观看_国产AV国片偷人妻麻豆潘甜

Iron-cobalt Color Comparison Tester

Intruduction

It is designed to measure the color of the varnish ,thinner and other transparent liquids.

Take a certain amount of ferric chloride hydrochloric acid solution, potassium dichromate sulphuric acid solution, and cobalt chlorite hydrochloric acid solution, The above three solutions will be mixed together at a certain percentage in order to get 18 solutions with different colors and densities. Then put them into the tubes and sealed separately.

The visual method is used to assess via the comparison with a series of anvil standard tone scale solution，which is marked with the color gradation number. The result is shown in 1-18.

Iron-cobalt Color Comparison Tester

Technical specification

■ Colorless glass tube with the internal diameter of Φ10.75±0.05mm,ａnd the height of 114±1mm.

■ Color comparison box(self-prepared)

■ The test must be taken at the temperature of 23±2℃