Respirable crystalline silica (RCS) refers to fine particles of crystalline silica that can be inhaled into the lungs, posing health risks such as respiratory diseases and lung cancer. When a material contains less than 0.1% respirable crystalline silica, it indicates a very low concentration of this hazardous substance.
This threshold is important in various industries, particularly in construction, mining, and manufacturing, where exposure to silica dust can occur. Regulatory bodies often set permissible exposure limits (PELs) for RCS to protect workers' health.
If you're looking for specific information or guidelines regarding materials with low levels of respirable crystalline silica, or related health and safety practices, please provide more context!