APPENDIX
D
Special Application Notes
MEASURING LARGE SAMPLES
Measuring large samples requires consideration of the nature and
size of the sample. You should experiment with these procedures to
find the best approach for your particular application.
Samples such as leaf discs, tissues, and other solids often require
considerable time to reach equilibrium. The Process Delay Mode
allows you to delay the measurement indefinitely or to take succes-
sive readings without opening the chamber.
The time required to achieve equilibration can be determined by
taking measurements until the readings no longer decrease. Once
you become familiar with the required equilibration time for a partic-
ular type of sample, you can simply leave the chamber closed for
the required time and then press ENTER to begin the osmolality
measurement.
The standard sample holder has a diameter of 7 mm and a depth of
1.25 mm. Two optional sample holders are available from Wescor
for measuring samples which are too large for the standard sample
holder.
•
AC-064 sample holder is 7 mm dia x 2.5 mm deep.
•
AC-065 sample holder is 9.5 mm dia x 4.5 mm deep.
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