It first passes through a machine that removes impurities, next through a mechanical sieve that separates the beans according to size, and then onto a vibrating table that separates them according to weight.
वर्गों में बाँटने के लिए सबसे पहले, इन नमूनों को उनकी किस्म के मुताबिक छाँटा जाता है ।