The standards for dust-free cloth usually vary depending on different industries and application areas. Here are some common standards:

SEMI standards: The International Organization for Standardization of Semiconductor Equipment and Materials (SEMI) has developed a series of standards for dust-free cloths, such as SEMI F57-0301, which specify the requirements for the use of dust-free cloths in semiconductor manufacturing.

ISO standards: The International Organization for Standardization (ISO) has also developed some standards related to dust-free cloths, such as ISO 14644, which mainly focus on the requirements of clean room environments, but also indirectly affect the selection and use of dust-free cloths.

Industry standards: Each industry or region may develop its own dust-free cloth standards to meet specific application needs.