When correctly installed, the GMP231 is minimally exposed to contaminants in the chamber. There is little reason to perform cleaning other than normal chamber sterilization, and changing the filter and/or silicone plug if they appear contaminated.
The CARBOCAP® sensor of the GMP231 is well protected by the PTFE filter, and it can tolerate some dirt on the optics as the measurement is compensated for the reduction of signal.
| CAUTION When changing the filter, you can use clean instrument air to gently blow any loose dirt and filter material away from the sensor. Do not attempt to clean the optical surfaces of the sensor in any other manner. |