How many milliliters is the 5cm on the needle tube?

Release time：

2022-01-10 13:38

1. It is generally 5ml, that is, 5ml, that is, 5CC, but because the needle tubes are both thick and thin, which are also 5cm long, the test of large needle tubes for intravenous injection is very different from that of small needle tubes for skin;
2. Therefore, it is necessary to measure the radius of the needle tube, and then calculate by yourself: cylinder volume=bottom area x height, bottom area=radius x radius x 3.14, and the height is 50mm;
3. The unit on the needle tube must be mm, so the calculated value is ml.
4. The thickness of the needle is expressed by the number of digits, generally 4.5, 5, 6, 7, etc., and number 7 indicates that the diameter of the needle is 0.7mm (possibly the outer diameter). Generally, children use size 4.5 or 5, and adults use size 7.

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