Example 1. The following spreadsheet uses the Excel Char function to return the character associated with different supplied character set numbers. Note that these results are from the Ansi character set (used on the Windows operating system).
Potassium tellurite agar is selective for the growth of Staphylococci and is somewhat selective for the growth of Corynebacteria. Staphylococci and Corynebacteria reduce the potassium tellurite in the agar, which makes the colonies grow black.
Potassium Sorbate. Potassium Sorbate (K-sorbate) is a wine additive, used primarily as a preservative to help prevent re-fermentation of sweet or semi-sweet wines. Potassium sorbate releases 74% sorbic acid, whose anti-fungal properties inhibit the spread of yeast and molds.It's action against bacteria appears to be selective.otassium Sorbate (K-sorbate) is a wine additive, used primarily as a preservative to help prevent re-fermentation of sweet or semi-sweet wines. Potassium sorbate releases 74% sorbic acid, whose anti-fungal properties inhibit the spread of yeast and molds. It's action against bacteria appears to be selective.