In this study, dissolvable polyvinyl alcohol (PVA) films are used in a 3D-printed sensor holder, which enables film integration without the use of glue. PVA is a synthetic hydrophilic linear polymer, its solubility is dependent on its molecular weight and degree of hydrolysis.

PVA strips were tested for SARS-CoV-2 vRNA via qRT-PCR and infectious virus. We show efficient recovery of vRNA and infectious virus from virus-spiked PVA with detection limits comparable to nasal swab samples.

Nov 6, 2023 · In this study, we focused on the fabrication of an innovative biodegradable poly (vinyl alcohol) (PVA) nanofiber swab tip using the electrospinning technique.

PVA swabs (polyvinyl alcohol) are well-known for their excellent water-absorbing properties. They are used in various applications, such as cosmetic ear cleaning, medical sampling, and laboratory research.

The pores of the PVA swabs swell, causing hemostasis thanks to the retention of the clot and the pressure exerted on the walls of the nasal pits. However, the most important disadvantage of simple Merocel® is pain.

In this study, a swab was used as an auxiliary tool to mix the sampling target with the PVA solution and to strip off the solidified membrane. Other tools can also be used as a substitute for swabs to detach the membrane.

Seda Spa, PVA Nasal Swabs distributors since 1973: browse the online catalog and discover models and availability.

Sterile cup or O & P transport container with formalin and PVA (Para-Pak® pink and gray). Endocervical, vaginal, or male urethral swab; first-void urine (patient should not have urinated for one hour prior to specimen collection); cervical cells in liquid cytology vial.

PVA strips were tested for SARS-CoV-2 vRNA via qRT-PCR and infectious virus. Results: We show efficient recovery of vRNA and infectious virus from virus-spiked PVA with detection limits comparable to nasal swab samples.

Jul 1, 2020 · We fabricated hydrogels by blending levan and poly(vinyl alcohol) (PVA) and by using glutaraldehyde as a cross-linking agent. Fabricated levan-PVA hydrogels have a high water solubility and water adsorption ability. SEM observations showed that levan-PVA hydrogels have a 3D porous structure.