Gentle Researchers,

I am measuring thermal diffusivity of distilled water through LFA 447 nanoflash, but the value I am receiving is very high 0.22 mm2/s. The 2nd layer of the sample holder have 0.65 mm thickness. where I put 55-85 microliter of water. further i used tempratures of 20-80C. The main issue i found is the red status in display after completion of shoots. So anyone who can give a clue to resolve this issue and bring the diffusivity value down to its exact value?