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Explanation: My guesses (see confidence level!) would be Hefe- und Schimmelpilze for "H/S" and "Verderbniskeime" for Verderbnis-K" - maybe the links below will help.
The s *could* be "salztolerant", and it's conceivable (to me as a non-biochemist, non-farmer and non-drinker of mare's milk!) that s and K could be connected with a test for "Koagulase positive Staphylokokken". But now I'm REALLY guessing... More context might help - what are the other test results listed before and after this one?