Describing the MCS+ Disposable Collection Material 4-11
P/N 85213-30, Manual revision: B
Managing the
bowl air
inventory
The disposable bowl contains sterile air which is displaced into a collection
container as the bowl is filled during a DRAW cycle. This same air returns to the
bowl when the non-collected components are returned to the donor during a
RETURN cycle. It is important that this air return to the bowl from the collection
container in order to avoid negative pressure in the bowl.
Figure 4-8, Latham bowl operation
A. Filling the bowl
1. Anticoagulated whole
blood
2. Air
3. Plasma
4. Red blood cells
B. Collecting plasma
1. Anticoagulated whole
blood
2. Plasma
C. Surge (elutriation)
1. Plasma
2. Platelets and plasma
3. Buffy coat
D. Returning
components
1. Non-collected blood
components
2. Air from plasma
bag
2.
1. 1.
2.
1.
2.2.
1.
A.
B.
C.
D.
3.
4.
3.
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