Tetra Aldose® Aseptic in-line dosing0 pages

Tetra Aldose®
Aseptic in-line dosing

Application
Aseptic dosing of true solutions and suspensions containing particles smaller than 0.22 microns into aseptic systems.
Examples of ingredient(s) that are suitable for aseptic
dosing by a Tetra Aldose unit include: Enzymes, vitamins,
aromas, flavourings, colourings and salt solutions, i.e.
products not suitable for sterilisation by heat. The
Tetra Aldose can also be used to achieve a sweeter taste in
unsweetened milk products. The Tetra Aldose is fully
automatic and can serve one or several fillers as well as an
aseptic tank.

Working principle
The ingredient(s) to be dosed is stored in the tank on the
unit. This ingredient(s) is pumped through pre-filter to
remove larger particles, then through a sterile filter to
remove bacteria and spores and then continuously dosed
under aseptic conditions into the main flow.
The ingredient(s) to be dosed is pumped by a positive
displacement pump with speed control for accurate

dosing. A flow transmitter controls the amount to be dosed
and an aseptic valve cluster control the start and stop of
dosing. The ingredient(s) is mixed into the main flow by a
Tetra Aline in-line mixer.
The Tetra Aldose unit can be connected at various stages to
an aseptic process; downstream the steriliser in a UHT plant,
upstream an Aseptic tank.
The filter and entire pipe work, up to the dosing valve, are
pre-sterilised before production by steam at 121°C for 30
minutes. After sterilisation the unit is cooled down with air.
After production a CIP (Cleaning In Place) is performed. The
Tetra Aldose is equipped with an internal automatic CIP. A
CIP sequence normally contains both caustic and acid
cleaning.
The dosing process, pre-sterilisation and CIP are supervised from the control panel. The Tetra Aldose control
system is prepared for connection as a slave unit to a central
control system, or other modules such as Tetra Alsafe or
filling machine.