How do collect blood pen and collect blood needle use

(Note: blood collection needle, blood collection pen with spring)

The first blood collection is swung open, and the pricking needle is inserted into the blood collection (there is a fixed cylindrical groove in the blood collection) and then the hat is removed to expose the pricking needle tip. Blood was collected and tightened. This will install the blood needle.

Then select the scale, there are 1 to 5 days in the cap scale, can rotate the selection of 5 scale is connected to the deepest deepest, also prefer.

Pull the spring at the end of the pen (the blue part of the tail), so the pen is fitted, and the final alignment of the pen with a good needle strikes when part of the key is pressed and the needle punctured the finger pops out.

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