How do I determine the condition of the sampling kit?

    1. Check the tube (for signs of piercing or impurities such as traces of liquid or dust)
    2. Check the connectors (for warping, piercing or cracks)
    3. Check the needle (ensure it is straight, does not move between the needle and the connector, or is not warped)
    4. Check the filter (for warping and ensure it is white, stain and dust free)
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