8
Flowing recesses of the UNGUATOR® SMB
The flow-adapted shape of the UNGUATOR® SMB generally cleans itself during the rotating
penetration of the ointment. Unmixed ingredients may adhere to recesses of flow of the
UNGUATOR® SMB depending on the ointment’s ingredient’s compatibility sequence of
weighted sample but also if the UNGUATOR® Jar is considerably underfilled (e.g. large
volumes of powder). These remnants should be transferred into the UNGUATOR® Jar using
a spatula when about half of the mixing time is complete. The air should be decreased
again following this process. When using the UNGUATOR ® Disp. Blade, however, there are
no recesses and no remedial work is required.
Heating
The heat that develops from the friction between the UNGUATOR® MB and the inside
wall of the UNGUATOR® Jar is required. Decreased viscosity increases the wettability
of powders and accelerates the penetration of potential powder pockets. Even the
emulsifying readiness of fats and oils is benefited by heat. A temperature of 54 °C/129
°F was the maximum taken after 6 minutes of mixing a highly pasty preparation made of
vaseline and zinc oxide aa at full speed. This temperature increase is generally safe for the
substances used in the pharmaceutical field. Ointments of low viscosity only heat slightly
[2]. Volatile substances such as ethereal oils or alcohol do not evaporate from the closed
UNGUATOR® Mixing System.
Pic. 9: Assignment of the UNGUATOR® SMB with different length of shafts
