<Dd> h i (\ displaystyle h_ (i)), the heterogeneity of the i (\ displaystyle i) th particle of the population </Dd> <Dd> c i (\ displaystyle c_ (i)), the mass concentration of the property of interest in the i (\ displaystyle i) th particle of the population </Dd> <Dd> c batch (\ displaystyle c_ (\ text (batch))), the mass concentration of the property of interest in the population </Dd> <Dd> m i (\ displaystyle m_ (i)), the mass of the i (\ displaystyle i) th particle in the population </Dd>

Can a homogeneous mixture have a variable composition justify giving an example