Visualizing Flow Using IR Transparent Fluids

[Omenus]

Hi.
I am working on visualization of flow with thermal infrared camera. As it is known, water is not transparent for IR spectrum of light, so you can`t watch phenomena that are occurring "inside". You can only see things that are occurring on the interface of water and wall.

I have been working with some fluids like acetone or dichloromethane, which are transparent only few millimeters.
Now I am trying to find liquids that are transparent more than that, let`s say few cm.
So, has anybody been working with such a fluid or does anybody know for a research/article, which has dealed with this things?

Thx.

 

[rgm]

Hi,

I am also looking for room temperature IR transparent fluids. Were you able to narrow down any fluids with such property ? Please suggest.

Thank you !

 

[Kevin McHugh]

Carbon tetrachloride has no IR spectrum.