How it works
A seal you can see, and a mark that confirms it.
Vividose® is a dosing system: a colored plunger seal plus barrel markings that include fill indicators. When the seal’s color sits inside the indicator, the volume is confirmed.

01
Connect and draw
The dosing device — typically a syringe — connects to a vial, line, or reservoir. Retracting the plunger draws the agent into a transparent or semi-transparent barrel. A colored seal rides at the leading edge of the plunger. The preferred seal is fluorescent, so it reflects more light than a conventional black seal.
02
Marks that include a target window
The barrel carries contrasting markings. The patent disclosure describes black print: volume lines, numbers, and fill indicators. Indicators can be hollow shapes, such as circles, or pairs of lines. They are sized to the bevel of the seal.
03
Align color inside the indicator
The user sets the seal so its color is visible inside the fill indicator — color filling the circle, or sitting cleanly between the line pair. That confirms the drawn volume. One embodiment described in the disclosure lays a seal color over a printed indicator color and produces a third color at the correct alignment.
04
Deliver
The agent is delivered through the needle, connector, or tube. The same reading applies at the bedside, in a clinic, or when someone is measuring a dose at home.
Side by side
The method in the patent disclosure is short: connect, retract the plunger, align the colored seal so it is visible within a fill indicator, then deliver the agent.
Conventional
Black on black
The seal and the mark are the same color. The edge you are supposed to read disappears into the line.
Vividose
Color in the window
The fluorescent seal fills the indicator. The target volume is a color you can see, not a guess at a black edge.
Illustrative diagram of the reading problem and the Vividose approach. Not a scale drawing and not a finished device.

Configurations in the product materials
- Seal colors marketed: fluorescent pink, green, orange, and yellow.
- Sample seals described for 5 ml.
- Disposable syringes described in 3, 5, or 10 cc, with a 1½-inch needle.
Those are the configurations written down for early samples. This site is not a catalog, and those sheets are not a current offer. Ask through the interest form for present terms.

An early syringe graphic from the project files, kept at its original small size.
Described, not offered
The patent disclosure includes further embodiments. They explain the scope of the idea. They are not products you can order.
- Seals with more than one bevel.
- Glow-in-the-dark seals.
- Fill indicators that create a third color when the seal color overlays a printed color.
- A broader neon set, including red, purple, and blue, alongside the marketed pink, green, orange, and yellow.
- Automated actuators that move the plunger.