DS/IEC 554-3-4:1981 Specification for cellulosic papers for electrical purposes. Part 3: Specifications for individual materials. Sheet 4: Electrolytic capacitor paper
The standard contains the requirements for electrolytic capacitor paper of the following tyeps: Absorbent separator paper, long fibres - Short fibres - Non-abosorbent paper.
DS/IEC 554-3-4:1981 history
1981DS/IEC 554-3-4:1981 Specification for cellulosic papers for electrical purposes. Part 3: Specifications for individual materials. Sheet 4: Electrolytic capacitor paper