Here is an example:
Substrate Date Identifier
The date identifier is the date in YYYY/MM/DD format. This makes it easy to sort my list by creation date in an excel or spreadsheet tool. This is the day I prepare the grain in jars or the bag substrate.
Substrate Content Identifier
Now I want to list the primary content types I have in my grain. In the example above I am 50% Rye, 50% Barley. That is all I need for the ID number, if there are other additives such as coffee I can put those in my notes based on the ID.
Now I want to know what mushroom I am inoculating the substrate with. In the example above, PO, its Pink Oyster. I also am going to the jar lever by adding an XX at the end of the id. I.e. PO01 is Pink Oyster Jar 01.
Why do this?
This is a convenient way to put a lot of data in my batch number. I am doing this so I can start to track my success rates based on some of the information in my Part number.