Error Contribution: Diameter vs Mass

Currently in many cases the uncertainty of the mass estimate is the limiting factor for the uncertainty and reliability of the bulk density, but if the mass estimate is accurate to about 20%, the contribution of the uncertainty of the volume-equivalent diameter therefore can easily overwhelm that of the mass:

(Δρ/ρ)2 = (ΔM/M)2 + 9(ΔD/D)2