The reinforcing lens is mounted on the helmet of the alembic. It represents a deflegmator in the form of a lens and is used to increase the alcohol content of the distillate by returning the distillate to the boiler, which forms as a result of cooling the alcohol vapors. It allows obtaining alcohol with a strength of 80-90° in a single distillation. It attaches to the alembic with a threaded connection. The kit includes an extension tube to the height of the lens.
By using the lens, you will get a stronger and cleaner distillate.