Oil content less than how much is considered oil-free?

In the technical field, "oil-free" does not mean absolutely oil-free, but means that the oil content is below a certain limit value. Generally, when the oil content is less than 0.01 mg/m & sup3;, it can be regarded as "oil-free" or reaching the "oil-free standard". This standard is widely used in various scenarios that require strict control of oil pollution, such as semiconductor production, precision machining, pharmaceutical manufacturing and other industries. In these areas, even trace amounts of oil contamination can have a significant impact on product quality or the production process.

It is important to note that the "oil-free" standard is not static and may vary by industry, application or specific equipment requirements. Therefore, in practical application, the applicable "oil-free" standard should be determined according to the specific situation.

In general, when the oil content is less than 0.01 mg/m & sup3;, we can consider that the "oil free" standard is reached. This standard helps to ensure the purity of the production process and the stability of product quality.