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The stability test way of horse syringe

The following is the stability test way of horse syringe:

Firstly, visually inspect the appearance of the horse syringe. In the bright place of natural light, it should be visually observed. Because of the uniform color, the surface of the syringe should be smooth and smooth. The inner wall of the needle tube is smooth and free of corrugations. The head of the syringe should be smooth, smooth and has no effect on the printing defects.

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horse syringe

Secondly, the pull-out force of the filler cap should be between (4.0-4.5)N. The cooperation between the piston and the push rod; the piston is completely inserted into the syringe filled with silicone oil and filled with half of the water, the protective cap is inserted into the syringe, and the distance of 3MM is slowly withdrawn backward, and the push rod should be stable. Should not be separated by the piston.

Apply axial pressure 30N to the plunger of the push rod again for 30 seconds. There should be no leakage at the seal of the pre-filled syringe cap and the piston seal. Use the push rod...

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