Figure 2. Dilution of 1:100
Figure 3. Diluted yeast sample
Staining the sample
In order to determine the viability of the yeast, it must be stained
with methylene violet or methylene blue.
Methylene violet is recommended as the best
method for brewer’s yeast.
Caution: Methylene violet and blue solution are
poisonous when ingested.
Please consult the safety information in the
appendix.
5
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