Material: glass, plastic, specifications: 13 * 75/13 * 100/16 * 100mm for biochemical, immune, serum and other clinical High quality serum samples were obtained from medical tests. The serum separation gel is a semi-solid inert adhesive composed of several compounds. The separation gel is synthesized by medical polymer. After centrifugation, the separation gel is separated into serum (upper layer), separated glue (middle layer) and blood cell (lower layer ). The thick layer of serum in the middle of the test tube can completely isolate serum and blood cells, so that blood cells can not come into contact with serum, thus ensuring the purity of the serum. Operation of the blood collected to separate the blood storage tube, immediately gently repeated 3-5 times (so that the blood and coagulant fully mixed), until the blood is completely solidified (usually about 15-30 minutes), will be separated Glue placed in the centrifuge, centrifuge speed to ensure that the 3000-3800r / min, centrifugal 10-15 minutes, but can get the required serum. And can be placed directly into the automatic biochemical analyzer, biochemical testing.