Measurements of the low-shear-rate viscosity of a model hard-sphere suspension are presented. Suspension volume fractions are calibrated with respect to the thermodynamic disorder to order, or crystallization, transition. At freezing, the low-shear suspension viscosity is found to be approximate to 53 times that of the solvent. This result is discussed in the light of the considerable literature on hard-sphere suspension viscosity. Particle dynamics in the same suspensions is studied by two-colour dynamic light scattering. We find that the inverse structural relaxation time scales exactly as the suspension viscosity.