Sample preparation is key to good analytical results as in most cases analytical instruments give inaccurate results with real samples.  Because preparation of a sample requires a procedure, there is a decision to be made around inclusion of the complete procedure or just a reference to the procedure (either formal standard or in-house).  While I think that it is important to provide a mechanism to allow users to articulate each step in sample preparation, I imagine that referencing a procedure will be significantly more common.  Anything missing? If so, email This email address is being protected from spambots. You need JavaScript enabled to view it..

10-02-14: Moved some of the metadata to the 'Sample" category and made some new items here for subsamples
04-28-15: Moved interference to the description category