When receiving information from your supplier in a 'per 100ml' format, you will need to convert the data into a 'per 100g' format using the specific gravity of the product.
You will need to divide the nutrient value by the specific gravity before entering this into the nutrition information section of the new ingredient.
Example: for oils, divide values by 0.92
You can measure this yourself. For example, if you weigh one liter (1000ml) of a juice on accurate scales, the weight might be 1041g. So the specific gravity will be 1041 divided by 1000, that's 1.041.