column still packing material

[Yoosefheidari]

hi everyone
i'm making a column still and need help for packing material.
my boiler is 50 liter which i fill it 40 liter of my wash.
i use a 90cm tall and 63mm(60mm ID) diameter column.
for packing material i'm using copper pipe and cut it to little raschig ring which are 11mm in width and 12mm in diameter.
i use about 1000 of them in my column.
are they enough?in terms of number and dimention?

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