Section 189. Method of sale of commodities generally

All commodities, the
  method of sale of which is not prescribed  by  this  chapter,  shall  be
  sold,  or offered or exposed for sale by net weight, standard measure or
  numerical count pursuant to regulations promulgated by the commissioner.
  Such  regulations  may  prescribe  the  method  of  sale  for   specific
  commodities  or  categories of commodities and may authorize a method of
  sale  other  than  those  prescribed  in  this  section   whenever   the
  commissioner  finds that such other method is appropriate and consistent
  with the interests of consumers.