Shenzhen Medico Nasopharyngeal swab manufacturer with break point Operating instructions for disposable nasopharyngeal swab with break point Step 1: Hold the handle and gently insert the sampling swab into the mouth or nasal cavity. Schritt 2: Gently rotate the sampling swab 3-5 mal, and then take it out slowly. Schritt 3: Put the extracted sample into the sample collection tube, …