Insert the front end of the sampler into the test tube and fold it downwards along the mouth of the test tube.
When collecting nucleic acid throat swabs, insert the front end of the sampler into the test tube, hold the handle of the sampler with the other hand and fold it downwards along the mouth of the test tube to break it.
Nucleic acid throat swab sampling cotton swabs are also called throat swab samplers. After sampling, only the front part of the sampler is retained. The part that comes into contact with the sampler's hands cannot be dissolved in the sampling reagent.