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.
Agar medium is generally contained in a PETRI DISH (plate) or test tube. The test tubes containing agar are called âslantsâ or âslopesâ when they allow the medium to set at an angle. When the agar solidifies in a vertical tube it is called a âdeepâ. In a Petri dish the medium solidifies as a layer over the base of the dish. Agar