Rough or uneven surface of the tablets

Possible Reason:

– Distance between nozzle and tablet bed is incorrect
– Spray angle is wrong
– Spray drying
– Sedimentation of the dispersion
– Viscosity/solid content is too high
– Core properties are inadequate (high friability)
– Atomizing air pressure incorrect – too high or too low (AA)


– Increasing the spray rate
– Decreasing the drying capacity
– Reducing the atomizing air pressure
– Decreasing the viscosity
– Optimizing the distance between nozzle and tablet bed

Contact us if you are interested in more detailed information.