Siemens DCA Vantage Operator's Manual page 88

Touch only the tip of the capillary tube to the control material. If an air
NOTE:
bubble is present in the filled tube, discard the capillary holder and fill a new
one.
CAUTION
Prevent the control material from coming in contact with the plastic
part of the capillary holder. If control material comes in contact with
the capillary holder, discard the capillary holder.
7. Squeeze any excess control material out of the dropper into the control
bottle.
8. Close the control bottle.
9. Wipe any control solution off the sides of the glass capillary tube using a
lint-free tissue.
CAUTION
Do not touch the tissue to the open end of the tube. Contact with the
open end could result in a loss of sample.
10. Inspect the capillary holder for the presence of any bubbles.
If bubbles are obvious, discard the capillary and repeat the collecting
NOTE:
procedure.
88 DCA Vantage Operator's Guide