Yonglida QSG iron-cobalt Colorimeter is equipped with 18 iron-cobalt standard color-level solutions with color-level labels as standard, which is designed in accordance with GB/T1722 standards. The sample is compared with the iron-cobalt standard color-level solution by visual method . QSG iron-cobalt Colorimeter is suitable for color determination of paint, varnish and thinner.

1) Colorless glass test tube: inner diameter Φ10.75±0.05mm, height 114±1mm
2) Take a certain amount of ferric chloride hydrochloric acid solution, potassium dichromate sulfuric acid solution, cobalt chloride hydrochloric acid solution, and then mix the above three solutions according to a certain ratio to obtain 18 solutions of different color shades, and put them into test tubes respectively Middle seal.
3) Color box