0.12 ml is already in standard form. Scientific notation is a way of writing numbers that are very large or very small. It is written in the form of a x 10^b where 'a' is a number between 1 and 10, and 'b' is an integer.

To convert 0.12 ml to scientific notation:

1. Move the decimal point to the right until you have a number between 1 and 10. In this case, we move the decimal point one place to the right: 1.2.

2. Count how many places you moved the decimal point. We moved it one place to the right.

3. Write the number in the form a x 10^b, where 'a' is the number you got in step 1, and 'b' is the number of places you moved the decimal point, with a negative sign if you moved it to the right.

Therefore, 0.12 ml in scientific notation is 1.2 x 10^-1 ml.