old_contents: from .grid import GridContainer, GridItem
  from .liquids import LiquidWell
  
  
  class Microplate(GridContainer):
      rows     =  12
      cols     =   8
      volume   = 100
      min_vol  =  50
      max_vol  =  90
      height   =  14.45
      length   = 127.76
      width    =  85.47
      diameter =   7.15
      depth    =   3.25
      a1_x     =  14.38
      a1_y     =  11.24
      spacing  =   9
  
      child_class = LiquidWell
  
      def well(self, position):
          return self.get_child(position)
  
      def calibrate(self, **kwargs):
          """
          Coordinates should represent the center and near-bottom of well
          A1 with the pipette tip in place.
          """
          super(Microplate, self).calibrate(**kwargs)
new_contents: from .grid import GridContainer, GridItem
  from .liquids import LiquidWell
  
  
  class Microplate(GridContainer):
      rows     =  12
      cols     =   8
      volume   = 100
      min_vol  =  50
      max_vol  =  90
      height   =  14.45
      length   = 127.76
      width    =  85.47
      diameter =   7.15
      depth    =   3.25
      a1_x     =  14.38
      a1_y     =  11.24
      spacing  =   9
  
      child_class = LiquidWell
  
      def well(self, position):
          return self.get_child(position)
  
      def calibrate(self, **kwargs):
          """
          Coordinates should represent the center and near-bottom of well
          A1 with the pipette tip in place.
          """
          super(Microplate, self).calibrate(**kwargs)
  
  
  class Microplate_96(Microplate):
      pass
  
  
  class Microplate_96_Deepwell(Microplate_96):
      volume   = 400
      min_vol  =  50
      max_vol  = 380
      height   =  14.6
      depth    =  10.8
subject: Revert of af99d4483acb36eda65b; Microplate subsets are special and important.