What is the standard for oil content in compressed air in ppm
According to general specifications in the industrial field, the oil content of compressed air needs to be controlled at a hierarchical level according to specific application scenarios. In industries with strict air quality requirements such as precision manufacturing, food and medicine, the oil content of compressed air needs to be controlled below 0.01 mg/cubic meter, which is equivalent to 0.008 ppm (volume concentration). For general industrial application scenarios, the upper limit of oil content can be relaxed to 0.1 mg/cubic meter, with a corresponding concentration of approximately 0.08 ppm. It is recommended that enterprises establish an internal testing mechanism based on the air quality tolerance of production equipment and the quality requirements of end products, and refer to the compressed air quality grading specifications issued by the National Standardization Administration Committee, and regularly verify the performance of purification devices to ensure that the quality of compressed air meets process safety benchmark.
