I think you may use i.ex. the Aldrich solvent-still-head apparatus;
different flask sizes are available:
2000 ml (Cat. Z14,785-0) or 5000 ml (Cat.Z14,789-3)
If you already have all parts except the one for returning part of the
water, you may simply purchase i.ex. the 500 ml (also available are 200
ml and 1000 ml) still head with return finger (Cat. Z20,284-3) 24/40
joint.
Hope this helps
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