Urine analyzer impedance test system introduced

Perlong medical equipment manufacturers--of urine analyzer impedance test system is to point to determine the size of the impedance system cells and determination of urine conductivity conduction system.

Urine analyzer medical equipment impedance determination method is, when urine cells through the flow pool (flow pool and have had two electrodes maintain constant current holes, in between the impedance of the electrode produced make voltage change. Urine cells through the holes, cells and diluent exists between the larger conductivity or impedance differences, the impedance of the increased between voltage change, it and impedance proportional to the change.

If the electrode output current I between fixed, the voltage V and resistance R and change. That is when the cells have larger impedance through the holes, voltage also increased. Because of the different voltage mainly depends on the volume of cells, so the cell volume and cell number from the voltage information can be obtained in the pulse signal.

Part of the urine specimens can be at low temperatures contain certain crystallization, influence impedance determination of the sensitivity, cause not accurate analysis results. In order to guarantee urine specimens conductivity stability, use the following measures:

First, the use URINOPACK diluent dilution urine specimens, because contain EDTA dilute salt compounds, can remove urine contain the amorphous phosphate crystallization;

Second, urine specimens in the process of dyeing in urine analyzer will dilute the mixture urine and heated to 35 ℃, heating can dissolve urine specimen of uric acid salt crystals, remove urine crystallization in the impedance of the error caused by determination.

Urine analysis instrument impedance testing system of another function is measuring the conductivity of the urine: determine conductivity the electrode. The sample flow into the pool before, in the sample each conductivity receptors on both sides of the receiving urine samples conductivity electrical signals, and the electrical signals directly to enlarge the microprocessor. This conductivity and clinical use urine permeability is closely related.

Article : From Perlong medical (http://www.pl999.net/)
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