Process engineering design 

• Impeller selection
• Impeller power gassed / ungassed          
• Speed
• Mixing time
• Baffle design / Dead zones           
• Mass transfer, OTR, kLA-values
• Heat transfer       
• Energy distribution
• Foam breaker    

Mechanical design

• Shaft dimensioning / critical speed
• Impeller dimensioning
• Easy seal replacement
• Start-up behaviour
• Design of speed adjustments
• Vibrationanalysis agitator / vessel top
• Baffle vibration calculation
• Pressure Equipment Directive acc AD / ASME
• Aseptic design for agitator and innervessel acc GMP 
• Electropolished surfaces
• Material selection acc FDA