Flask Icon

Q: When should I use it instead of a similar icon?

Use it for experimental feature toggles on a Labs page in settings, off by default until they ship; chemistry and science courses in a learning catalog, as a subject tile or a filter chip; and the Testing view of a code editor, where unit test runs are listed and rerun. For drinks, juices and smoothies on a cafe menu or a grocery aisle, use the Glass icon. For blood work and sample results in a patient portal, use the Test Tubes icon.

Erlenmeyer flask with a liquid level line in its lower body, for lab work, chemistry and medical tests. Available in 4 styles (outline, solid, duotone and filled) as a React component you install with the shadcn CLI.

Preview

Flask icon in outline, solid, duotone and filled styles

16px
20px
24px
32px

Install and code

pnpm dlx shadcn@latest add @reui/icons/default/filled/flask

Writes reui/icons/default/filled/flask.tsx

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Flask icon in shadcn/ui components

Button

Icon button

Button group

Badge

ExperimentalExperimentalExperimental

Dropdown menu

Input group

Sidebar

Empty state

No experiments turned on

Try an experimental feature from Labs and it shows up here, ready to turn off at any time.

Flask icon FAQ

What does this icon show?

Erlenmeyer flask with a liquid level line in its lower body, for lab work, chemistry and medical tests. Typical uses: research lab section link, experimental feature flag and medical test results area.

When should I use it instead of a similar icon?

Use it for:

Experimental feature toggles on a Labs page in settings, off by default until they ship
Chemistry and science courses in a learning catalog, as a subject tile or a filter chip
The Testing view of a code editor, where unit test runs are listed and rerun

For drinks, juices and smoothies on a cafe menu or a grocery aisle, use the Glass icon. For blood work and sample results in a patient portal, use the Test Tubes icon.

Which styles does it come in?

4 styles: Outline, Solid, Duotone and Filled. Every style is drawn on the same 24 by 24 grid and installs as its own file, so you can switch styles without touching the layout.

How do I install it with the shadcn CLI?

Copy the install command from the panel above, in the style you want, and run it in your project. The shadcn CLI adds the icon as a React component that you import and render like any other. It draws in the current text color, so your text color and size classes style it. Icon installs need a ReUI Ultimate license.

What icons go well with it?

Icons from the same family and the Health set: Bandage, Capsule, First Aid Kit, Mask, Pill and Pulse.

When was it added?

It joined the ReUI icon library on June 30, 2026.

For AI Agents

Hand your agent this brief or the ReUI MCP, not a screenshot. Installs with a ReUI Ultimate license.

When to use

Experimental feature toggles on a Labs page in settings, off by default until they ship
Chemistry and science courses in a learning catalog, as a subject tile or a filter chip
The Testing view of a code editor, where unit test runs are listed and rerun

When not to use

Drinks, juices and smoothies on a cafe menu or a grocery aisle: use the Glass icon
Blood work and sample results in a patient portal: use the Test Tubes icon

Agent notes

Name an icon-only button with its label, "Try experimental features", as the aria-label

Markdownhttps://reui.io/icons/preview/flask.md

MCPget_icon("flask")

Installnpx shadcn@latest add @reui/icons/default/duotone/flask

Full index for agents:llms.txtReUI MCP setup

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