This gem was a highly efficient pilot-scale condenser, made by Adams-Chittenden. It was found online and was to be a great addition to our 200L pot as the primary condenser. Unfortunately, those internal cooling coils are subject to vibration damage, and snapped off internally in transit. The exterior glass shell remained intact. There is no affordable or practical way to repair this unit, so it was a claim and total refund. It will probably take another decade to a find a deal like this one. RIP!