T/WFSB 06-2021, the Four Treasures of the Study, ink for students' use

Scope

Main technical content: The main technical content includes the classification, performance requirements, and safety requirements of student ink. Among them, the classification is divided into student ink juice and student ink sticks according to the product form; the performance requirements of student ink juice include: color, centrifugal color, diffusion, water resistance, cold resistance, and anti-corrosion, a total of 6 items; the performance requirements of student ink sticks include: odor, warpage, ink output, ink color, and diffusion rate, a total of 5 items. The safety requirements include: migratable elements, total lead, total cadmium, free formaldehyde, total volatile organic compounds, benzene, toluene, ethylbenzene, xylene, and the total amount of phthalate esters in accessible plastic materials. In addition, student ink juice also has one item, a total of 9 items

Development Information

Related Standards