In the clinical medical experiments usinghuman venous blood as specimensome take the serum from the specimen as the experimental object.The blood collection tubes suitable for this type of medical tests are called serum blood collection tube.
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Elaborate on the five major features of the school fuel pump
School pumps, the school is the meaning of correction and repair. The task of a light and compact fuel pump is to provide an oil pump with a housing made of an aluminum-containing material and a movable mold part arranged in the housing, The movable molding being at least partially made of a sinterable material comprising an iron-based alloy containing at least one austenite, and wherein the molded part made of a sinterable material has a A thermal expansion coefficient of at least 60% of the thermal expansion coefficient of the housing. 1. The school oil pump, suitable for conveying all kinds of oil, such as heavy oil, diesel oil, lubricating oil, with copper gear can deliver low flash point liquid, such as gasoline, benzene, the unit also produces stainless steel gear pump can transport drinks and corrosive liquid. 2. School pumps, at the same time can be suitable for hard particles or fibers, suitable for a variety of viscosity. The temperature can be as high as 300 ℃, if you need to transport high temperature liquid, please use the high temperature resistant gear pump to transport the liquid under 300 ℃. 3. Pumps, a variety of pump-type structure is simple and compact, easy to use and maintain, with good self-priming, to help each pump before opening without filling the liquid. 4. Some pump lubrication is delivered automatically by the liquid, so the daily work without additional lubrication. 5. The use of flexible coupling transmission power to compensate for the pump caused by installation of small deviations. In the pump work by the inevitable hydraulic impact, the school pump can play better buffering effect.