Product number: 7405
Selective Strep Agar, Modified No. 2 is used with blood for the selective isolation of group A streptococci in a laboratory setting. Selective Strep Agar, Modified No. 2 is not intended for use in the diagnosis of disease or other conditions in humans.
Selective Streptococcus Agar was developed by Roantree et al., for the isolation of group A beta-hemolytic streptococci. Further improvement was made by adding yeast nucleic acid and maltose, promoting increased colony size and enhanced clarity of hemolytic zones produced by group A streptococci. This modified formula also increased inhibition of Staphylococcus spp.
|Enzymatic Digest of Casein||10 g|
|Beef Extract||6.7 g|
|Nucleic Acid||6 g|
|Sodium Chloride||5 g|
|Neomycin Sulfate||0.002 g|
|Polymyxin B Sulfate||0.024 g|
|Selective Agents||0.00289 g|
Final pH: 7.3 ± 0.2 at 25°C
Formula may be adjusted and/or supplemented as required to meet performance specifications.
- Suspend 43 g of the medium in one liter of purified water.
- Heat with frequent agitation and boil for one minute to completely dissolve the medium.
- Autoclave at 121°C for 15 minutes. Do not overheat.
- Prepare 5 – 10% blood agar by aseptically adding the appropriate volume of sterile defibrinated blood to melted sterile agar medium, cooled to 45 – 50°C.
|Product #||Product Description|
|7405A||Selective Streptococcus Agar, Modified No. 2, 500 g|