Mitis Salivarius Agar is used with Tellurite Solution 1% in isolating Streptococcus mitis.

• Peptones as a source of carbon, nitrogen, and nutrients
• Dextrose and saccharose provide carbohydrate sources
• Crystal violet and potassium tellurite inhibit bacterial growth
• Tryptan blue gives colonies a blue color
• Agar is the solidifying agent

S. mitis and S. salivarius are known as viridans streptococci, and these organisms play a role in cariogenesis and infective endocarditis and cause an increasing number of bacteremias.

Salivarius, and enterococci, particularly from grossly contaminated specimens.