SF-8200 Operation Manual
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3) The network power must have a protective earth terminal. Internal protective grounding terminal
marked with symbols, must be reliably grounded through the power outlet.
4) The network power input socket is a disconnect device for the power supply of the instrument and the
network. Do not install this device in a hard-to-disconnect position.
5) In the possible damp places, should be installed leakage protector.
6) For safety, do not open the front cover of the instrument or insert your fingers into the instrument dur-
ing testing, which may result in personal injury. If the front cover is opened during the test, the instrument
will sound the alarm and stop working at the same time. When closing the front cover, hold the front cover
with your hands and slowly lower it. During the test, the operation table inside the instrument prohibits
placing extra items.
7) Unless instructed in this manual, do not attempt to open it yourself. It may cause high voltage or other
hazards to you. Maintenance of these parts should be done by qualified personnel.
8) When inspecting or maintaining, please use protective rubber gloves or other protective measures,
and use specific tools or parts. After finishing the work, please wash your hands with disinfectant.
9) The company's instruments are equipped with a power regulator, generally do not need an external
voltage regulator. Only when the external power supply voltage fluctuations exceed 100-240V, you can
use the UPS regulator, you cannot use the ordinary regulator.
4 NOTES FOR PREPARING THE TEST
4.1 SAMPLE PREPARATION
1) Selection and dosage of anticoagulants
Anticoagulant 105-109mmol / L, 3.13% -3.2% (usually described as 3.2%) of sodium citrate
(Na3C6H5O7 • 2H2O), other anticoagulants such as heparin, EDTA, oxalate, etc. are not allowed to use.
The final concentration when anticoagulant is mixed with blood is usually 10.9-12.9 mmol / L. Anticoag-
ulant and blood volume ratio of 1: 9.
If the patient's hematocrit (HCT) greater than 55% or less than 20%, usually need to adjust the
amount of anticoagulant.
The amount of anticoagulant can be adjusted according to the following formula:
X = required anticoagulant amount × [(100 - HCT) / (595 - HCT)]
Of which: x - ml, the amount of anticoagulant required
HCT -%, hematocrit
Such as: need 5ml anticoagulant, the patient's HCT = 20%, the required anticoagulant x = 0.7ml
2) Sample collection
Equipment in contact with blood, such as test tubes, pipettes, and syringes must be plastic.
Acquisition should be fasting state in the morning, take the elbow venous blood, the sample size can not
be less than 2 ml. Blood should be sharp, avoid repeated puncture, to avoid hemolysis, platelet aggre-
gation, pumping tissue fluid or bubbles mixed phenomenon, such as hemolysis should be re-drawn
blood.
Bleeding blood and anticoagulants, the method should be gentle, not violent shaking. The antico-
agulant mixture was centrifuged at a temperature of 25-32 ° C, the relative centrifugal force of plasma
separation was 1500 × g, and the centrifugation time was controlled at about 15 minutes until the cen-
trifuge was stopped naturally (for example, hemolysis should be reabsorbed ), Test tube supernatant