Consider an acid clot. it can appear as pink or white with a pink band at the top.

Litmus milk is an undefined medium consisting of skim milk and the pH indicator azolitmin.

Azolitmin is purple between pH of 4.6 and 8.2. It turns pink when pH reaches 4.5 and blue at a pH of 8.3.

Lactose ferminatation turns the litmus pink due to acidity. If litmus is reduced during lactose fermentation it will turn the medium white. Acid may cause an acid clot this is due to the casein precipitating. Heavy gas production can cause stormy fermentation, this is due to the breaking up of the clot.

Explanation:

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