Fresenius Medical Care GranuFlo Dissolution Unit II - Hydrometer Cylinder Filling and Preparation

7 . 1 S P E C I F I C G R A V I T Y T E S T Continued
P/N 450368 Rev I 17
Gently Swirling Hydrometer Cylinder
Figure 10
Figure 9: Item A, Filling Hydrometer and Item B, Slightly OPEN Main Transfer Ball Valve
6. Fill the Hydrometer Cylinder:
 Insert the Transfer Nozzle into the Hydrometer Cylinder.
 Slowly OPEN the Transfer Nozzle Valve until solution
starts to slowly accumulate into the Hydrometer
Cylinder. Allowing solution to fill down the side of the
beaker minimizes the creation of bubbles within the
solution (Figure 9, item A).
 Fill the Hydrometer Cylinder approximately 2/3rd full.
 CLOSE Transfer Nozzle and then press PAUSE on the
Display Panel.
 Place Transfer Nozzle onto a clean surface.
7. Make sure the solution you gathered does not have
excessive amount of bubbles. To release excess bubbles
from the solution gently tap the Hydrometer Cylinder
and/or gently swirl the entire Hydrometer Cylinder until
most of the bubbles have been released from the solution
(Figure 10).
NOTE: TO ENSURE THAT THE SPECIFIC GRAVITY READING IS CORRECT, THE OPERATOR MUST MEASURE THE
TEMPERATURE OF THE SOLUTION IN THE HYDROMETER CYLINDER FOR EVERY BATCH.
A. Filling
Hydrometer
Cylinder
slowly down
the side.
B.