Egg Yolk Tellurite Emulsion (20 %)
Boiling point (bp) 100 °C
Melting point (mp) 0 °C
Storage temp. +4 °C
Transport temp. ambient temp.
Application: We recommend using Baird Parker Agar (Base) (Art. No. X913.1) for base agar.
The ISO 6888 recommends a final concentration of 5 % emulsion in the prepared medium.
Add after autoclaving.
100 ml Egg Yolk Tellurite Emulsion is sufficient for 2 l agar medium.
excl. VAT. | 100 ml per Pack Qty.
Art. No. 0339.1
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Egg Yolk Tellurite Emulsion (20 %) 20 %, ISO 6888, sterile, stabilised, for microbiology
Egg Yolk Tellurite Emulsion is used as supplement in nutrient agars for detection of lecithinase activity and concurrent tellurite reduction in microbial colonies. Hence, Staphylococcus aureus may be identified by the dark grey to black staining of the colonies due to tellurite reduction, accompanied by lecithinase-caused formation of light, sometimes whitish halos surrounding the colonies.
|Certified according to||ISO 6888|
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Available at short notice
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|Egg yolk||20 %|
|Sterile saline solution||80 %|
|Potassium tellurite||0,21 %|