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“Instrument air compressor” should be used generally as a compressor?

(a) True

(b) False

I have been asked this question in my homework.

This interesting question is from Role of Shear in Stirred Fermenters topic in chapter Fluid Flow and Mixing of Bioprocess Engineering

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The correct option is (b) False

Easiest explanation: Note that it is very important that an “instrument air” compressor is not used. Instrument air is typically generated at higher pressures but is aspirated with oil. Instrument air compressors are used for pneumatic control. Air compressors used for large scale bioreactors typically produce air at 250 kPa. The air should be dry and oil free so as to not block the inlet air filter or contaminate the medium.

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