What is the causing my solution to precipitate?

I have a solution that contains M9 Minimal Media 5X, Glucose, Magnesium Sulfate, Calcium Chloride and L-Phenylalanine. When the solution is pH'd to 8.5 with 4M Sodium Hydroxide, it starts to precipitate. What is the causing the solution to precipitate?




It is probably precipitating Calcium Hydroxide and Magnesium Hydroxide since you are adding a very concentrated NaOH solution to it. Not sure if this is what you've asked though.


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