Material With Interchangeable Joints The Centred Neck Is Vertical. All The Three Side Necks Are Inclined At An Angle Of 20° To The Vertical Neck The Two Side Necks Are 180° Apart, And A Third Side Neck Is At 90° From The Other Two Necks Uniform Wall Thickness Distribution And Round-Bottom Shape Make Them Ideal For Heating The Shape Facilitates Uniform Heating Accessories, Thermometer, Column, Dropping Funnels, Boiling Capillaries, Etc. Can Be Fitted Depending Upon The Application Generally Used In Distillation And Extraction Processes