PLA has a melting point of 155°C and a glass transition temperature, the point at which the material loses its rigidity and softens, of 60°C. This meant that pressurized steam sterilization methods, such as autoclave, could not be used to sterilize our 3D printed swabs.
Low-temperature plasma using evaporated hydrogen peroxide (at 45°C) was therefore utilized to sterilize and package the swabs. This method proved to be effective at sterilizing the swabs while preserving their physical properties. Learn more about our methodology by downloading our guide below.