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Biological risks (biohazard) symbol: the biohazard trefoil: three interlocking open rings around a small central ring, without a triangle or frame
ISO 15223-1-5.4.1, ISO 7000-0659
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Biological risks (biohazard)

The biohazard trefoil: three interlocking open rings around a small central ring, without a triangle or frame. · also called “Biohazard”, “Biological hazard”, “Biological risk”, “Trefoil”

What the Biological risks (biohazard) symbol means

Potential biological risk

Warns that the device may pose a biological hazard, for example because it contains material that could carry something infectious such as a virus. It is used on devices, reagents and analysers that may carry such material.

Source · Official website Medical device manufacturer's symbols glossary (diagnostics and women's health products) · checked

Where it appears

Medical device label
  • ISO 15223-1
    —This meaning

Questions about the Biological risks (biohazard) symbol

What does the Biological risks (biohazard) symbol mean?
Warns that the device may pose a biological hazard, for example because it contains material that could carry something infectious such as a virus. It is used on devices, reagents and analysers that may carry such material.
What does the Biological risks (biohazard) symbol look like?
The biohazard trefoil: three interlocking open rings around a small central ring, without a triangle or frame. It is also called “Biohazard”, “Biological hazard”, “Biological risk” and “Trefoil”.
Which standard defines the Biological risks (biohazard) symbol?
It is listed as ISO 15223-1-5.4.1 and ISO 7000-0659.

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