Quality criterion: Sensory: Taste: Typical instant coffee Smell: Typical instant coffee Color: Brown coffee color Appear: Powder form Chemical / physical: Moisture: d 4.0 % PH ( H+ ) : 5.1 ± 0.2 Caffeine ( % ) : < 3 Density: 200 ± 10 g/ liter Ash ( % ) : d 5.03