Dimensions / weights 
W x H x D [mm / kg]    
XN-550: 450 x 450 x 660 / approx. 53 kg
Throughput 
up to 60 samples/h in WB mode
up to 70 samples/h in WB mode with the optional Speed-up licence
Aspiration volume 
25 µL in WB mode, 
70 µL in PD and BF mode
Analysis parameters 
Whole Blood
WBC, RBC, HGB, HCT, MCV, MCH, MCHC, PLT, RDW-SD, RDW-CV, PDW, MPV, P-LCR, PCT, NEUT#, LYMPH#, MONO#, EO#, BASO#, NEUT%, LYMPH%, MONO%, EO%, BASO%, IG#, IG%
With RET (optional) 
RET#, RET%, IRF, LFR, MFR, HFR, RET-He, PLT-O
Body Fluids with XN-BF (optional)
WBC-BF, RBC-BF, MN#, PMN#, MN%, PMN%, TC-BF#
Measurement principles  
WBC DIFF/RET: Fluorescence Flow Cytometry
WBC: Flow Cytometry
RBC/PLT: DC Impedance method with hydrodynamic 
focussing
HGB: Cyanide-free SLS method
Data storage capacities 
Results: 100,000 samples 
Patient information: 10,000 records 
Calibration history: 20 times/ module
QC files: 99 files including XbarM
User maintenance    
Daily shutdown
Weekly cleaning sequence with Cellclean or Cellclean Auto