This swab is filled with iodine. When you bend one end of the swab, the iodine quickly rushes to the other end, dispensing onto the cotton tip. It is a one-time use applicator with a built-in liquid dispenser.
This is a convenient way to carry a pre-measured amount of liquid that is easy to dispense. It is particularly elegant in the way it dispenses liquid from one end while the dispensing is activated at the other end, and so does not interfere with the application of the liquid. Compare this with products where you must remove the applicator, break a seal, and then reattach the applicator to use.
The way this dispenser works is by holding the liquid in place with a vacuum. Think about placing a straw in a glass of water. If you cover the end of the straw with your finger and raise the straw out of the glass it will remain filled with water, being held in place by a vacuum at the top end of the straw. When you remove your finger the vacuum is broken and the water drops out of the straw. This dispenser works in the same way. Snapping the end of the swab allows air into the tube, so the liquid flows out.
There is a sealing oil on the open end of the tube so the liquid inside is not exposed to the air. When the liquid is dispensed it breaks through the center of the sealing oil. These cotton swab dispensers are currently used in first aid, beauty care, tooth whitening, oral care and foot care products. Large sizes are available and custom sizes are available depending on the application and liquid.
DesignAid samples were provided by Swabplus. Existing swab dispensers range from $0.05 to $0.15 each depending on order quantity and packaging method.
Applications
Step: Put make-up, tooth whitener, or bleach in this swab dispenser packaging.
Stretch: One-time use toilet bowl cleaners could be easily activated from the opposite end of the scrub brush.
Leap: A tube with two separate chambers could mix the chemicals upon dispensing.
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