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 dichromate is a salt used to make bleach for photographic purposes. It is both toxic and an oxidizer (potential fire hazard). To dispose of excess solid potassium dichromate always wash the solid down the drain with large amounts of water. Never dispose of the solid in a wastebasket.