ATF
Systems
(
Low
Shear Seperation Process)
The
ATF(Alternating Tangential Flow) System provides an efficient means for
fractionating a mixture or suspension of
cells, molecules or other particulates.
ATF
is a patented system with flow pattern of
changing tangential flow through a filter
that results in a more efficient filtration
process. ATF is tenerated with a unique
pump and control system. The pump is partitioned
by a medical grade flexible diaphragm into
two compartments, an Air(A) side and Liquid(L)
side. Any change in volume in compartment
A will cause an equivalent but opposite
change of volume in the L compartment. Controlled
flow of filtered air to or from compartment
A provides the driving energy for the corresponding,
but inverse, liquid flow in other compartment
B, or between a vessel and ATF Pump through
a filter module. In summary:
1.
Pressure cycle - A Pressurizes by inward
flow of air = Medium is expelled from
L, through the HF Filter, to Vessel.
2.
Exhaust cycle - A Exhausts by expulsion
of air = L Expands by inflow of medium,
through the Filter, form Vessel.
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