Dear Sung Jin,

I would recommend looking in the Molecular Probes Catalog.  They have a wide
variety of fluorophores.  The most commonly used is fluorescein.  It is
readily available from lots of people such at Sigma or Molecular Probes.
You will need a fluorescent set up to see it.  You might be able to work
with tartrazine but I am guessing it would be too weak.  Tartrazine would be
colorimetric.

Tina Garyantes

> ----------
> From:         Sung Jin
> Reply To:     Sung Jin;mems-cc@ISI.EDU
> Sent:         Wednesday, March 10, 1999 8:20 AM
> To:   MEMS@ISI.EDU
> Subject:      Coloured or fluorescent liquids for microfluidics?
>
> Dear MEMS community,
>
> I would like to test a microfluidic device.  For this I would
> like to render the fluid very visible, to a camera, like many
> famous pictures of coloured or fluorescent liquid in capillaries.
>
> My problem is that I do not know what kind of liquid does that.
> If anybody knows the answer, please help me.
> I would appreciate knowing the commercial name of the agent,
> and if there is any special procedures to use it (is it mixed
> in water?  or alcohol?).
>
> Thank you very much!
>
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