So, I applied this question for a similar use: Extension of the numbering system for a laboratory sample with each digit distinguishing something else and a 3rd digit denoting a heating profile
The resulting function was used to extend these codes to people who otherwise would not know my logic:
=IF(MID(B2,3,1) = "1", "Temp1°C for 1 hour", "Temp2°C for X hours")
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