In the two short years from 2020 to 2022, the new crown epidemic became the most familiar word to us. We used to do our homework on the epidemic prevention policy and prepare for the nucleic acid test before we traveled far, and the test report turned into an important proof of travel with the same status as an ID card. I can't count the number of times my throat has been stabbed with a long, thin stick, the number of times I've dry-heaved, and my throat has become calloused. And these "sticks" is our protagonist today - nucleic acid test swabs.
How to use disposable sampling swabs
We all know that the sterile swab is used to collect human DNA samples, but the specific operation is not as simple as we see, so how to use this sterile swab? Here to take you to learn more about it!
Disposable sterile swab how to use
(1) first open the swab package, carefully remove the swab, pay attention not to touch anything before taking samples to avoid contamination.
(2) put the swab into the place to be sampled, by staying, rotating or wiping for sampling
(3) gently remove the swab, usually put the swab into the virus collection tube, remove the end of the sampling swab after breaking at the fracture, tighten the cap and remove it quickly for inspection.
I. What is a nucleic acid testing swab?
Nucleic acid sampling swabs, or flocked swabs, use nylon microfiber as the head material. The small brush-like shape is ideal for quickly absorbing fluid samples from irregular surfaces and can thoroughly release the collected sample into the culture fluid, and the soft bristles can also reduce the discomfort of the sampled person. The handle of the sampling swab is generally made of polystyrene (or ABS) with a break point designed in the middle for easy fracture to put into the sealed bottle.
Second, the raw material material material of nucleic acid detection swab ▲ swab full stick ▲ flocking head flocking: PA short flock (nylon short flock) or PET short flock (polyester short flock) flocking adhesive: flocking adhesive (polyacrylate emulsion adhesive) sampling stick material: HIPS (high impact polystyrene)
Three, the production process video ▲ swab stick rapid injection production in the machine ▲ sampling swab electrostatic flocking (electrostatic generator) ▲ sampling swab flocking drying production line
▲Nucleic acid testing sampling swab packing equipment production process: injection molding --- dipping flocking glue --- centrifugal dumping glue --- box electrostatic flocking --- baking --- finishing --- inspection --- disinfection packaging first through automatic injection molding machine injection swab stick, the swab stick installed on the bracket, impregnated flocking glue centrifugal dumping excess glue, put into the flocking box for flocking, and then drying in the drying channel, after drying finishing inspection, and Finally, disinfection and packaging into nucleic acid sampling swab products.
Four, the principle of electrostatic flocking ▲ simulation of electrostatic flocking experiment principle: the principle of electrostatic flocking is the use of the physical properties of the charge homogeneous repulsion opposites attract, so that the lint with a negative charge, the object to be flocked in zero potential or grounded conditions, the lint by the attraction of the plant body of the opposite potential, is vertical accelerated to the surface of the object to be flocked, because the plant body coated with adhesive, the lint is stuck vertically on the plant body, the electrostatic flocking principle is the principle of electrostatic flocking. Electrostatic flocking is a new production process that takes advantage of the natural characteristics of electric charge.
Box type flocking process: Flocking box is made according to the size and shape of the flocked product, and the flock is placed in the box and the power is turned on, so that a high voltage electric field is formed in the flocking box, and the flocked product is sent into the box from one end of the flocking box, and after three to five seconds, the flock is removed from the other end of the box and dried or dried to be the finished product.
