116 BioPAT
®
 Trace | Multi Trace Operating Instructions
  Maintenance and Servicing
9  Maintenance and Servicing
9.1  Cleaning
t The surface of the BioPAT
®
 Trace | Multi Trace housing should only ever be 
cleaned with a wet cloth.
9.2  Decontaminating the Tubing Set
9.2.1  Contamination by Biofilm
During processes that run over long periods of time (periods of more than 
one week), the inside of the tubes becomes contaminated by a biofilm. This 
biofilm causes the tubing sets to become increasingly blocked and leads to 
fluctuating and inaccurate readings. This particularly applies to the storage 
tanks, which are constantly being filled with new, diluted “ready-to-use” 
transport solutions.
To prevent the transmission of microbes, the almost empty storage tanks 
must be completely replaced by new storage tanks with fresh solution.
During some cultivation processes that run over long periods of time, the 
biofilm also forms in the disposal line and the drip chamber. In this case, too, it 
is necessary to replace the disposal tank regularly. This prevents the disposal 
line from being permanently filled with “waste”.
The disposal tank can be protected by also filling it with a disinfectant 
solution.