I am looking for an instrument(s) to measure thermophysical properties, specifically the latent heat of melting, thermal conductivity, and heat capacity of a PCM (phase change material).
Applies a temperature gradient across a slab of material, and measures the power needed to maintain that gradient. If you know the cross-sectional area, thickness, and power, thermal conductivity drops out.
The Differential Sanning Calorimetry (DSC) is the adequate technique to measure specific heat , heat of reaction, latent heat in phase changes and so on.
Some DSC instruments include software tools for the determination of hte thermal conductivity.
Mennatalla Elmanzalawy you can use Differential Scanning Calorimetry (DSC) for latent heat of melting (technically termed as latent heat of fusion). Perkins have plenty of those on offer.
For thermal conductivity, you can use TPS method using Hotdisk equipments. A good company for that , to my knowledge, is Thermtest Inc.
you can use hot disk test thermal conduct tivity and specific heat. can use ASTM D5470 method test thermal resistance and thermal conductivity. use Rheometer for phase change point test.