020202QST Transparency Tube Tester Description: BGD 413 transparency standard tube is made according to GB/T 1721 “Method for Determining the Appearance and Transparency of Varnish, Oil and Diluent”. It is mainly used to judge the appearance and transparency of varnishes, varnishes, paints and diluents, that is, whether they contain mechanical materials and the degree of turbidity they present. The utility model has the characteristics of simplicity, convenience, speed, etc., and is one of the essential instruments for coating inspection. Main technical indicators Working standards: 3 colorless liquid standard samples and 3 non-ferrous liquid standard samples, strictly according to the requirements of the national standard GB 1721:02 plugs colorimetric tube: capacity 25 ml wooden concealed box: bring your own