Semi-washed Robusta Coffee Beans Cleaned Grade 1 Screen 18 - Black Beans : 0.1% Max. - Broken Beans : 0.2% Max. - Moisture : 12.5% Max. - Foreign matter : 0.1% Max. - Free from mouldy and fermented beans. - Min. 90% above screen 18. VIETNAM UNWASHED ROBUSTA COFFEE BEANS GRADE 2, EQUIVALENT NESTLE 7.2 - Black and Broken Beans : 3.0% Max. - Moisture : 12.0% Max. - Foreign matter : 0.5% Max. - Free from mouldy and fermented beans. - Min. 90% above screen 13.