Thanks! The explanation of 'Individual Biological Value' cleared the thing up: I could not think of a reasonable explanation for it, and that probably spread to the other terms as my brain went for a topspin. It also explains why I couldn't make any of my attempts at setting a criterion work as I expected.
Ideally, of course, your explanation should not be needed. But ... that may be easier said than done. (It seems desirable to keep the word 'value' for the separate samples, and not reuse it for the sum of them and so confuse it.
'Minimum Base value' need to show that it is a sum of several values. "Sum of lowest possible values" seems slightly better, but is still weird. "together worth at least" might be another possibility. 'Pessimistic full payout' ?
'individual Biological Value' is more diffucult. I'd like to get rid of the word 'biological' entirely as it adds nothing to the actual meaning, and also the word 'individual' assuming that the term 'value' always is used for a single sample. 'Max lowest possible value' might do if 'sum of lowest possible values' was used. 'Best pessimistic single sample payout' ?
'Pessimistic' might be replaced with 'Guaranteed'.
Tricky.