oil air compressor and oil free air compressor difference?

q: oil air compressor and oil free air compressor difference?

Answer: The oil content of the oil-free air compressor is 0.01ppm. Why does oil still appear in the gas? There will be more or less a little oil in the atmosphere we breathe, which is very, very little for the human body.

What kind of gas is sucked into the water lubricated air compressor of Shanghai granklin group and what kind of gas is discharged. The oil content of the oil injection air compressor is far greater than this value.

So use this oil content to distinguish between oil and oil-free air compressor.