Ordinary glass tubes are prone to hemolysis due to the high pH value, while the glass test tubes made by the tube-drawing process are densely packed with linear grooves, which lead to cells hanging on the wall due to the irregular depth and thickness.
Some production lines of the tube used to collect blood already use neutral glass (medicinal glass). Neutral glass has the advantages of pressure resistance, less dissolved substances, tight molecular arrangement, and fewer grooves when stretching. Reduce the chance of resampling. And the bottom of the test tube is specially strengthened to avoid damage during centrifugation.
After more than ten years of application and promotion, the use of vacuum blood collection systems has become quite popular. The test tube materials are divided into two types: plastic and glass. The design uses the principle of negative pressure and is used in conjunction with a disposable venous blood sample collection needle. The blood is automatically dosed into the tube, and different additives are added to meet the needs of the test items and are distinguished by the color and label of the outer tube cap.
The suction volume of the collection container should be between 90% and 110% of the nominal capacity (including liquid additives), and the product should not detect fluorescence during the container leakage test. The container strength test should be able to withstand an acceleration of 3000g without fracture, collapse cracks, or other physical defects.
However, China's industry standard for vacuum blood collection tubes will be officially implemented on August 1, 2008. So far, the product standards of various vacuum blood collection tube manufacturers in China are not the same, so the quality varies greatly. According to the composition of the product and the compatibility of the product technology with laboratory medicine technology, the products seen on the market can be roughly divided into five generations.
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Gongdong Medical is an OEM medical blood tube factory in China. Welcome to inquire.