[product structure] the product consists of cork puncture device, air inlet device, clamp, tee, dropper, drip bucket, pipeline, flow regulator, injection part, blood return vessel and liquid medicine filter (nominal aperture is 2 µ m、3 µ m、5 µ m) It is composed of a protective cover and an intravenous infusion needle（ It can be without tee, air inlet device, clamp, injection part, ileum and intravenous infusion needle parts).

[main materials] the pipeline, tee, dropper, drip bucket and venous needle connector are made of PVC raw materials meeting the requirements of GB 15593-1995; The bottle stopper puncture device, liquid medicine filter shell and plug-in joint are made of acrylonitrile butadiene styrene (ABS); The needle tube is made of 0Cr18Ni9 austenitic stainless steel in accordance with the provisions of gb18457; The liquid medicine filtration membrane and air filtration membrane are made of polypropylene fiber. The injection part (or ileum) is made of latex.

[main performance] the product is sterilized by ethylene oxide, sterile and pyrogen free.

The total length of the product is more than 1600mm; The particle pollution index of liquid path surface is less than 90; In 60 ml of eluent, 5.0 µ No more than 100 particles / ml are allowed for particles above M; The precision filter infusion set should not leak; The connection between the components of the liquid passage shall be able to bear a static tensile force of not less than 15 N for 15 s without falling off; The removal rate of latex particle suspension with corresponding nominal pore size by the liquid medicine filter should not be less than 90%; Under 1 m static pressure head, output sodium chloride solution [mass concentration: 0 ρ( NaCl) = 9 g / l] should not be less than 500 ml; The weight of the dropper is 20 or 60 drops of distilled water equivalent to 1 g ± 0.1g(1mL ± 0.1mL)。