Consumption and Goods Receipt based on Dip Level, Purity and Density

Dear Team

Client has a requirement where materials consumption quantity is derived from following three characteristics for the day:

Example: For a raw materials: On a day, they record dip level, Purity, density and good receipt date for the raw material from Purchase order.

From these parameters they calculate the Goods Issue quantity. They have certain formula by which they calculate the goods issue quantity considering Opening Stock, Goods Receipt from PR & Purity, density.

Now where do I maintain the these parameters and how to I maintain the calculation in SAP System.

Note: I am not using IS OIL & GAS.