CELL-DYN
3000 System Operator’s Manual
4-9
9140240E — May 1995
Chapter 4
System Specifications
Measurement Specifications — CELL-DYN 3000SL and CS
Measurement Channels
Impedance channel for both RBC and PLT
Laser Optics for WBC and Differential
Hemoglobin Absorbance
WBC and Differential
Method
Laser light scatter
Light Source
Vertically polarized 5–10 mW helium neon laser
Wavelength
632.8 nm
Dilution
1:51 of blood in sheath reagent
Data Collection
Four angles measured:
0
°
, 10
°
, 90
°
and 90
°
depolarized.
Data collected in 256 channels for each angle of
light scatter.
RBCs and PLTs
Method
Aperture Impedance
Aperture Size
60 µm (diameter) x 72 µm (length)
Dilution
1:12,501 of blood in diluent
Data Collection
256 channels for RBCs,
each RBC channel = 1 fL
256 channels for PLTs,
each PLT channel = 0.137 fL
HGB
Method
Modified hemiglobincyanide
Light Source
LED
Wavelength
540 nm
Dilution
1:251 of blood in diluent and
Hemoglobin Lyse
Data Collection
Average of 5 absorbance readings for the blank,
average of 5 absorbance readings for the sample
dilution
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