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Chapter 14: Solvent Removal

2. Prepare the rotovap. Using the handle, raise up the core part of the rotovap assembly. If the solvent trap is more than half-full, detach it and empty it into the organic waste. Check that the rotovap’s bump trap and adapter are clean. If the sample will become a free-flowing powder after the solvent is removed (for instance, if you are

Standard Operating Procedure Task: Rotary Evaporation

4. Attach the bump (splash) trap to the joint on the rotator of the rotovap using a clip; then connect your round-bottom flask to the bump trap using a second clip. Do no use grease on the rotovap joints. The clean ground glass joint connections will make an adequate seal and avoid getting grease in your samples. 5.

Rotary Evaporator Fact Sheet - UMass Amherst

8. Use a bump bulb (see picture) placed between your sample and the condenser to prevent contamination of the condenser area (and your sample) in the event of bumping. Remove and clean the bump bulb from the rotovap immediately after use to ensure ground glass joint connections do not stick together and to prevent

How does a Rotary Evaporator Remove Solvent? - Rotovap

Aug 09, 2019 Fill the rotovap cold traps with dry ice. Attach a glass “bump trap” to prevent any solution from entering the main part of the rotovap. Secure with a clip. Connect the flask and bump trap to the adaptation part with a clip. Lower the flask into the water bath, preventing the flask from disconnection. 2.

Rotovap - Dartmouth College

Below is a photograph of a rotary evaporator. Important Features of the Rotovap. 1) The vacuum pump is the source of reduced pressure in the system. 2) Spin speed and bath temperature control knobs. 3) Water bath. 4) Bump guard. 5)Cold finger. (Please do not use the rotovap if the finger is not cold.

Bumping In Rotovap

bumping. Remove and clean the bump bulb from the rotovap immediately after use to ensure ground glass joint connections do not stick together and to prevent contamination of future samples that will be rotovaped. 9. Always ensure that flasks, bump bulbs, and ground glass joint connections are secured. Get Details

Home Environmental Health Safety UCI

Connect the bump trap to the rotovap and secure with the metal clip or a keck clip depending on the model of rotovap (pictured below). The bump trap should be kept clean, it provides a receptacle in case the solution splashes or boils beyond the flask. A clean bump trap can allow for recovery of any solution that “bumps”.

How To Clean a Rotary Evaporator - USA Lab

Dec 22, 2020 The easiest and quickest way to clean a rotary evaporator is to simply flush the machine with acetone (or another solvent of your choice). While this is not the most thorough cleaning method, it is ideal for situations where time is limited. To flush a rotary evaporator with acetone, fill up a small two-neck flask around halfway with acetone.

Bumping The Rotovap

disassembled. The bump traps may be kept in alternative locations (i.e. drying rack or drawer) to avoid breakage. 1. To begin, choose a bump trap of appropriate joint size based on the flask you intend to use. Secure this trap to the rotovap using the spring-loaded metal clamp shown in the picture. Do not use any grease on these joints. 2. Get ...

Keep Silica Out of your Bump Trap: Solid Sample Loading ...

Feb 11, 2021 When adsorbing a compound onto the silica, during solvent evaporation on the RotoVap, a common problem is silica bumping into the bump trap creating a potential loss of sample and the hassle of recovering the silica from the bump trap. A cool little trick to avoid all that trouble is to use the frit that comes with the 5-g solid load cartridge ...

Rotovap Rotovap Technology Supplier - Ecodyst

Feb 21, 2021 Our all-in-one Hydrogen modern rotary evaporator sets a new standard for rotovaps and is changing the way people see rotovaps. This will ultimately become the standard rotovap in labs and industries worldwide. I see a future where this self-cooling rotovap technology replaces all water, dry ice and chiller rotovaps in the world.

How does rotary evaporation work? -

How does the rotary evaporator work? The rotovap works by increasing the rate of evaporation of the solvent by (1) reducing the pressure to lower the solvent boiling point, (2) rotating the sample to increase the effective surface area and (3) heating the solution. To use the rotovap, first make sure that the power is on (top right of the stand).

Standard Operating Procedure: Rotovaps

Jun 06, 2016 solvent waste bottle located in the rotovap hood, remove your sample from the system and if you bumped into the bump trap remove it from the hood and subject it to the typical cleaning method employed by the lab. Step by step instructions located in rotovap hood area if further information is required. Personal Protective Equipment:

How to Minimize Bumping and Foaming Blog

Jun 26, 2017 For bumping you can add agents, such as boiling chips, which make the boiling more uniform. To prevent contamination and sample loss from bumping or foaming, a bump trap or a foam brake can be installed. This secondary flask will collect your sample if it bumps or foams over, avoiding product loss and a contaminated rotovap.

The Rotary Evaporator

known as 'bumping - an intermittent, uncontrolled boiling. The on-off switch is located at the upper left on the rotovap motor and the speed control knob below it. You need not set the rotation speed of the flask at maximum; however, you must rotate the flask to prevent bumping at reduced pressure. 6. Lower the entire condenser-motor-flask ...

Rotovap - General Discussions on StillDragon Community Forum

Mar 07, 2018 7 March 2018 07:09PM edited March 2018. Yeah the vertical coil and cold finger condensers use the short duct, the horizontal uses the long duct. I have a short duct and the horizontal, which is also a mismatch. However, my horizontal is an older model, with no temp probe accommodation. The horizontal pulls the vacuum from close to the flange ...

What is a bump trap? -

May 11, 2020 Bump Traps. Chemglass. Used between the vapor tube and evaporation flask on a rotary evaporator to prevent contents of the flask from being drawn into the condenser in the event of “bumping.”. Traps have a 24/40 top outer joint and the listed size of lower inner joint. Find out everything you need to know about it here.

Rotary Evaporator Bump Traps - Safety Emporium

Product Description. These are the most traditional rotary evaporator bump bulbs/traps which are used between the vapor tube and evaporation flask on a rotary evaporator to prevent the contents of the flask from being drawn into the condenser in the event of solvent bumping. The lower stem has 2 large holes; see CG-1321 and CG-1322 for modified ...

Rotovap Use: How To Reduce Bumping Video

Reduce bumping on the rotovap to minimize compound loss while removing solvent under reduced pressure. Otherwise, you'll find yourself diassembling and rinsing every square inch of the rotovap in a desperate attempt to recover what's left of your precious product. Report Abuse

Reducing Bumping on the Rotovap BenchFly

Reducing Bumping on the Rotovap by Alan Marnett The bump guard lesson is usually learned one of two ways: A) someone teaches you, or B) someone doesn’t. The former is ideal and you may have no idea how lucky you are. The latter looks like this… As an undergraduate, my research project involved the multi-step synthesis of a 20-membered macrocycle.

Rotary Evaporator Bump Traps Chemglass - VWR

Rotary Evaporator Bump Traps is used between the vapor tube and evaporation flask on a rotary evaporator to prevent contents of the flask from being drawn into the condenser in the event of bumping.Placing vacuum traps between an apparatus and vacuum source establishes a safe and controlled working system. The glassware protects the pump from the separated solvents …

Bumping The Rotovap

Rotovap Tips A. To avoid bumping: • Do not fill your flask full. • Faster spin rate usually helps. • Use a moderate bath temp – too high will cause excessively fast evaporation. B. Once you have removed the majority of solvent, empty the collection flask! • If you want to thoroughly dry the sample, reattach and continue ... Get Details

Rotovaps The Buchwald Research Group

Rotovaps. Rotavaps. To piss people off less, please remember that rotavaps are communal, and everyone is responsible for keeping them clean and functioning. This includes: 1. Emptying the collecting flask of solvent. Nobody should have to do it for you, and you know better than anyone what the collecting flask contains (EHS reminder).

Is rotary evaporator distillation?

The rotary evaporator, or rotovap, was invented in 1950 by the chemist Lyman C. Craig. ... Rotary evaporator bump trap is used between the vapor tube and evaporation flask on a rotary evaporator to prevent contents of the flask from being drawn into the condenser in …

USA Lab 2L Rotovap Bump Trap Adapter 24/40 - USA Lab

The USA Lab 2L bump trap is a convenient add on for your 2L rotovap. This product is designed to catch any splash back from your rotovap. For Technical Support, Questions, or Other Issues Please Email or Call Us! Other Details. Brand:

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