Kauri roots

There is a very thorough and complicated procedure to wash, disinfect the surface of kauri roots in preparation for plating on petri dishes.  Small sections of kauri root are washed a total of ten times and sterilised at least six times.

This is the first page of three listing all the steps in the process.  

The vortex is used to properly shake the root in water as part of the washing process.

A root sample at the beginning of the cleaning process.