Answer:
The gluten ratio in micrograms per milliliter is 13 µg/mL.
Explanation:
Consider the provided information.
It is given that the food has a gluten ratio of
.
Now we need to convert gluten ratio in micrograms per milliliter
To convert mg to micro grams use the information shown below:
1 mg = 1000 micro-grams.
1 L = 1000 milliliter
Now, substitute 1 mg = 1000 micro-grams and 1 L = 1000 milliliter in the above ratio.

Hence, the gluten ratio in micrograms per milliliter is 13 µg/mL.