Specification Robusta Coffee Grade 1 Screen 13 - On sieve screen 13: 90% min - Moisture: 13% max - Foreign matter: 1% max - Black & Broken: 5% max Robusta Coffee Grade 1 Screen 16 - On sieve screen 16: 90% min - Moisture: 12.5% max - Foreign matter: 0.5% max - Black & Broken: 2% max Robusta Coffee Grade 1 Screen 18 - On sieve screen 18: 90% min - Moisture: 12.5% max - Foreign matter: 1% max - Black & Broken: 2% max
