How can the actual operating amounts be kept consistent with formula requirements during premix preparation?

In premix preparation: 1. How can the amounts used in actual operation be kept consistent with formula requirements? To put it another way, even if the requirement is lowered a little, keep the error between the actual operating amount and the formula as small as possible. 2. How can the preparation process be better monitored to ensure there are no mistakes?
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Just weigh according to the requirements
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You can make a whiteboard, write the formula on it, and make a mark after weighing each item, writing it in groups of five strokes.