Low Viscosity fluid for calibrating a flow meter

[DanHernandez]

Hi, I am trying to calibrate a low viscosity cryogenic flow meter. I need to calibrate it to the viscosity of .4 centistokes.

But, in order for me to do so I need to first find a "K" value of a fluid at .8 centistokes, (the viscosity of which the flow meter is currently calibrated at).

My question is where can I find a fluid or calibration fluid of .8 centistokes? (I've searched the web and have not been able to find much, I did find that gasoline has a viscosity of .4-.8 centistokes, but since it is a range it will be hard to use)

I already have the fluid that is at .4 centistokes.

Thanks!