AS661 Hematology analyzer


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Tri-angle laser scatteing and flow cytometry
AS661 is a real 5-Part auto hematology analyzer. It uses 3 reagents to differentiate and count blood cells.
Diff lyse is added to differentiate 4 kinds of WBC (Lym, Mon, Neu and Eos), LH lyse is used to differentiate Bas and count WBC amount. Besides, there is a dedicated channel for Bas differentiation.
Surrounded with sheath fluid (diluent), blood cells pass through the center of the flow cell one by one at high speed.
The tri-angle laser scattering contributes to more accurate counting. When passing the flow cell, blood cells are exposed to a laser beam. The intensity of scatter light reflects the blood cell size and intracellular density. The optical detector receives scatter light signals and converts them into electrical pulses. Pulse data is collected to generate a scattergram.


Proven technology
Impendance and colorimetric
The count principle of the instrument is based on the measurement of changes in electrical resistance produced by a blood cell passing through an aperture sensor. Passing through the magnification circuit, the voltage signal will be magnified, which will be derived into impulses, and the analytical histogram will be generated.
Adding lyse in the blood, the red blood cell will rapidly be broken down and release hemoglobin. Hemoglobin and lyse form a new mixture, which can absorb the wavelength of 530nm. Measure the absorbency. Through comparison of the absorbency between the pure diluent and the sample, the concentration of the sample hemoglobin is calculated.

Technical Specifications
Principle: Tri-angle laser scattering, flow cytometry for WBC differentiation and counting.
Impedance for cell counting. Cyanide-free method for HGB
Parameters: 25 parameters: WBC, Lym%, Mon%, Neu%, Bas%, Eos%, Lym#, Mon#, Neu#, Eos#, Bas#, RBC, HGB, HCT, MCV, MCH, MCHC, RDW-SD, RDW-CV, PLT, MPV, PDW, PCT, P-LCR, P-LCC
4 research parameters: LIC%, LIC#, ALY%, ALY#
2 histograms for RBC and PLT
4 scattergrams for WBC differential
Throughput: 60 samples per hour
Calibration: Manual and auto-calibration
Quality control: 3 level QC, LJ graph, XB
Sample volume: CBC+ Diff mode: 20 µl / Prediluted mode: 20 µl
Reagents 3 Reagent (2 Lyse + 1 Diluent) / 1 PB cleanser for maintenance
Display: 10.4-inch color touch screen / Liquid Crystal Display (LCD) / Resolution 800×600
Storage: 100.000 sample results with histograms
Printout Built-in thermal printer, support external printer
Sampling mode Open mode, built-in barcode scanner
Maintenance Auto-cleaning of sample probe and tubes
Temperature 10 – 30°C
Interface 4 USB port, 1 LAN port, HL7 protocol, support LIS
Blockage clear High voltage, high pressure flush
Power supply: AC 100-240V 50/60Hz
Dimension: 430 x 350 x 435 mm
Display: 10.4-inch color touch screen / Liquid Crystal Display (LCD) / Resolution 800×600
Storage: 60.000 sample results with scattergrams and histograms


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