20L Rotary Evaporators

20L Neocision ETL Lab Certified Rotary Evaporator Turnkey System 20L NEO Rotary Evaporator Turnkey System setup includes all the necessary components to successfully perform solvent recovery via rotary evaporation. A cold trap should always be used inline between your vacuum system and application to protect the pump from volatile vapors. 10-50L NEO and ECO Rotary Evaporator Diagram   20L NEO Rotary Evaporator Turnkey System setup includes: 20L Neocision ETL Lab Certified Rotary Evaporator Polyscience 6160T 1HP Chiller 3/8" Gum Rubber - 100ft 3/8" Silicone Tubing - 25ft Welch BTpro100 Diaphragm Pump Adjustable Stainless Steel Hose Clamps   Rotovap Quick Start Guide This guide gives basic quick start instructions for rotovaps. It is intended to provide a starting point for learning the process. Parameters should be adjusted to suit specific needs. Clean and assemble unit. Make sure all pieces are cleaned and sterilized using an alcohol solution. Connect chiller to condenser and set to 0C (32F). Always fill a rotovap condenser from the top down (chiller output to top of condenser, chiller input to bottom of condenser). Connect vacuum pump to cold trap and connect cold trap to vacuum port on rotovap. Turn on heat bath and set to 40C (113F). Once heat bath, chiller and cold trap have reached desired temperatures, turn on rotovap motor and set speed to approximately 100 RPM (does not have to be precise). Keep in mind, higher RPM’s will increase evaporation power but also increase heat load. Start vacuum pump and allow vacuum to pull down for a few minutes before injection. Once vacuum has been pulled to a sufficient level (does not have to be precise but should be below 100 Torr), using the injection valve, very slowly inject approximately 500 mL of solution into evaporating flask and then close the valve. Allow this small amount to begin evaporating. You may see the chiller begin to rise in temperature, this is called “priming” the rotovap. Once the temperature stops rising or all liquid is almost completely evaporated, open the injection valve again very slowly so that a small amount of liquid begins to enter the evaporating flask. Do not close injection valve this time but continue to allow solution to enter the evaporating flask. At this point you must try to match the input speed to the output speed. What this means is that you should be injecting the same amount of liquid into the rotovap that is equal to the amount of liquid dripping from the condenser into the receiving flask. You will know that the input speed and output speed are matched because the chiller will remain at a stable temperature. If the chiller begins to rise, then you are injecting too much liquid. Dial back the valve until the chiller stabilizes. Once everything is stabilized, you may walk away from the rotovap if necessary. Check every so often to make sure temperatures remain stable and evaporation continues efficiently. ***Note: All units are inspected for broken glass or parts before unit is shipped. If unit arrives damaged or glass is broken (this does not include minor imperfections or scuffs in glassware), Customer MUST contact BVV™ within 3 days of delivery to file a claim and receive a replacement part. If customer DOES NOT contact BVV™ within 3 days of delivery responsibility for replacement parts falls on the customer and they must pay for replacement pieces.*** ***Note: This item will ship by freight only.*** ***Glassware Safety Disclaimer: BVV™ is not responsible for failure of glassware which must be inspected before and after every use because it may eventually develop imperfections or damage through normal usage, mishandling, and stress caused by temperature variations. If an imperfection or damage is noted while inspecting the glassware DO NOT use the glassware because it can fail causing bodily harm or damage to the surrounding area.***

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These plexiglass water bath covers are specifically designed for BVV rotary evaporators and will fit NEO and ECO models. This cover is placed on top of the roto bath and fits securely into place and ensures better temperature uniformity. It also allows condensation/steam to vent from the hole on the top so you can clearly see into the bath.   Specifications 20L 50L Material Clear Polycarbonate OD 19" 23" ID 16" 20" Height 10" 12" Front Hole 5" Wide x 6" Tall 5" Wide x 7.5" Tall Vent Hole Diameter 2"

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Stainless steel 20L and 50L evaporating flask carriers are custom made for BVV series rotary evaporators. These evaporating flask carriers can be placed on top of our 20L and 50L rotary evaporators water bath for safe and easy flask loading and unloading. They can also serve as a flask table stand.

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