The state of the material can then be specified by three parameters: its temperature T , the pressure P , and its specific volume ν ν = V / M , where V is the volume of the sample. (This quantity is the reciprocal 1 / ρ ρ of the material's density ρ ρ = M / V .) Like T and P , the specific volume ν ν is an intensive property of the material and its state, that does not depend on the amount of substance in the sample.