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Fluorescein Dye

Discussion in 'Training, Practices and Equipment' started by Zi55ou, Jun 22, 2019.

  1. Zi55ou

    Zi55ou Angel Fish

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    Divesoft Fluorescein Marker Dye so recently stumbled across this. Has anyone used it?

    How long will the dye last? If released at depth (say 40m) how visible would it become at the surface?
     
  2. Akimbo

    Akimbo Lift to Freedom Volunteer Staff Member ScubaBoard Supporter

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    I can't speak to this particular product but I used dye packs in the Navy. It is highly dependent on the currents, surface conditions, and lighting.

    Probably not at all. They are designed for use on the surface when you think someone is looking in your direction... like a rescue aircraft or a relatively nearby boat. Relatively nearby is very dependent on the highest deck on the boat that someone is likely to be looking from.
     
    Bob DBF likes this.
  3. DiverDownD3

    DiverDownD3 Manta Ray

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    Location: SOBX, NC
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    ^pretty much what he said
     
  4. Zi55ou

    Zi55ou Angel Fish

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    Cheers for the replies was wondering so as to release some at depth while not causing a fuss on the surface.
     
  5. GJC

    GJC Solo Diver

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    Location: Southern California, USA
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    They use it to see water flow on dam intakes and outflows. It doesn't float to the surface. It disapates pretty fast.
     
  6. Bob DBF

    Bob DBF Solo Diver

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    Location: NorCal
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    Akimbo likes this.
  7. JackD342

    JackD342 Dive Shop

    # of Dives: 500 - 999
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    Hmmm... did I see Mike Nelson pull this out of tool kit and deploy a couple of times?
     
  8. JohnnyC

    JohnnyC Divemaster

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    Location: United States
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    This is what it looks like underwater.


    It should be released at the surface if you're using it for signaling. Akimbo pretty much laid it all out already.
     
    Akimbo likes this.

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