Method for controlling amount of remaining oxygen in powder injection preparation
A residual oxygen and powder injection technology, applied in the field of inflatable packaging, can solve the problems of insufficient and high nitrogen filling, or the powder in the bottle is directly blown up, affecting the stability of the sample, etc., so as to reduce the residual oxygen and improve the stability of the sample. The effect of stability
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[0024] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0025] Figure 1-2 A device for realizing the method for controlling the residual oxygen content of powder injection preparations according to the present invention is shown, which includes at least one liquid nitrogen storage tank or nitrogen generator 1, and the liquid nitrogen storage tank or nitrogen generator 1 is connected with nitrogen filling through a delivery pipe 2 The head 3 is connected, and a control valve 4 is arranged on the delivery pipe 2. The nitrogen filling head 3 can be a rotating nitrogen filling head, which is tubular. The air pipe 5; the air outlet pipe 5 and the air inlet pipe 8 form an included angle α; the nitrogen filling head 3 is made of sta...
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