Specify the number of grid points per square-angstrom to use in discontinuous surface constructions (e.g., molecular surface and solvent-accessible surfaces). Ignored when srad is 0.0 or srfm is spl2. There is a direct correlation between this value used for the surface sphere density, the accuracy of the surface calculations, and the APBS calculation time. The APBS "suggested" value is 10.0. The syntax of this command is

   sdens {density}

where density is the floating point surface sphere density (in grid points/Ų).

See also: srfm