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19/22 joint. 2. Next, cold water is circulated through the rotovap condenser to condense the volatile solvent on the condenser coils and to prevent, as much as possible, the volatile solvent from vaporizing into the aspirator. Ice and a small amount of water are placed in the water-circulating pump. The circulating pump is plugged in. 3.
3. Metal or Keck pieces are applied in control of the blow of the cup and the trap. A green one appeared under the 24/40 frosted glass joints. The blue comparison clamps are adjusted to 19/22 joints, the yellow joints to 14/20, which are used in all possibilities in the laboratory. In the opportunity to break a trap, you must pay for it!
3. To close the system and thus activate the vacuum, turn the stopcock knob at the far end of the rotovap to align it with the vacuum (ie. turn until the arrow on the knob points straight down towards the attached tubing ie. knob is pointing to the “ON” position). The system is now under reduced pressure. 4.
6 ROTARY EVAPORATOR REPLACEMENT GLASSWARE Or 18002234524 • www.aceglass.com B uchi R eplacement G lass c omponents 13285 Vapor Duct Tubes (w/o combi clip) Joint Fits Buchi Models Length, mm (A) For Assy. Buchi Part # Order Code 29/32 210-215 160 A 46964 13285-04* 24/40 210-215 160 A 48068 13285-06* 29/32 210-215 54 V …
Adapters have joints with tube connections in various configurations to fit any reaction system. These bent or straight adapters are fabricated from borosilicate glass to provide a leak-proof fit with other glass instruments. Some models are designed for use as a vent or for the introduction of vacuum or pressure, while others have reinforced ...
Bchi Rotavapor RII evaporator with jack and water bath Joint: ST/NS 29/32, plastic-coated glass, condenser, diagonal, AC/DC input 230 - 240 V AC; find -Z564001 MSDS, related peer-reviewed papers, technical documents, similar products more at Sigma-Aldrich
Buchi Rotavapor R-215 Rotary Evaporator with integrated Vacuum Controller, complete with bath, standard glassware in standard North American joints and Diagonal A-Condenser, V850 vacuum controller with Woulff bottle. 12,136.82: 23122V011
Dec 18, 2015 The number before the slash signifies the outer diameter (OD) in millimeters (mm) at the widest part (the base) of the inner (male) joint. The number after the slash tell us the length of the ground glass joint, again in millimeters. So, for instance, an NS 24/40 joint would be a conical joint where the base of the male joint was 24 mm in ...
grease on the rotovap joints. The clean ground glass joint connections will make an adequate seal and avoid getting grease in your samples. 5. Power on the rotovap and rotovap water bath. 6. Start a gentle flow of chilled water (either using a chiller, if attached, or tubing connected to house water in a fume hood; flow rate should not be too ...
How to use a rotovap. A round bottom flask is placed with the mixture that we want to evaporate the solvent, filling it at the most up to half of its capacity. Check that both the collector and the evaporator tube are clean, because if the collector contains a solvent of a lower b.p. than the one to be removed, the evaporation process is slowed ...
Joints are 24/40. Receiver is 5 mL. Hose connection is size B, for use with 5/16in (7.9mm) or 3/8in (9.5mm) ID tubing. For version with 14/20 joints, or PTFE- clad version with 14/20 joints, see 9400. For 50 mL flask, see 6887-20. For joint clip, …
Jul 08, 2021 Rotary evaporators, commonly known as rotovaps , rotavaps or rotavapors, are extremely valuable to a number of downstream applications requiring efficient distillation solvent removal. Often combined with a vacuum pump, rotary evaporators are used to remove solvents from samples through evaporation. During this process, rotary evaporators reduce the …
Jun 06, 2016 First take your sample solution (in round bottom flask—volume half full) to the rotovap you wish to use. A bump trap (located in the drawer next to the rotovap hood) should be placed between the rotating vapor duct and your flask of sample solution (Keck clamps should also be equipped for the ground glass joints).
Jun 06, 2016 ground glass joints). Prior to turning on the pump, the rotation should be turned on and the stopcock ... Then slowly apply vacuum to your rotovap system by regulating the stopcock valve at the top of the rotovap. If the flask contents bubble vigorously, you should cease applying direct vacuum to prevent bumping up into the system. When solvent ...
Jun 12, 2016 The green one shown below fits 24/40 ground glass joints. Similar blue clips fit 19/22 joints and the yellow ones fit 14/20 joints. Use the speed control to rotate the flask. A typical rotavap uses a variable speed sparkless induction motor that spins at 0- 220 rpm and provides high constant torque.
Make sure to clamp all flasks and joints, this will ensure that the glassware does not fall and break. Glass parts (e.g., solvent trap) should be Plexiglas coated, mesh encased, or taped with electrical tape ... 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 ...
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 ...
May 19, 2009 Fill water bath (usually 2/3 full) with warm to hot water, set the temperature and turn it on. Put the thermometer from the rotovap unit into the water bath. Clean the vapor duct area and install the vacuum seal. Install a DRY evaporation flask. Close off (seal) the receiving flask/pump takeoff area.
Nov 09, 2018 3. A metal or Keck clip is used to secure the flask and the bump trap. The green one shown below fits 24/40 ground glass joints. Similar blue clips fit 19/22 joints and the yellow ones fit 14/20 joints, which will most likely used in the lab. If you break the bump trap, you will have to pay for it! 4.
Oct 24, 2015 When you being to run your rotovap we suggest starting at 150mbar, then step to 100mbar. Within this time, the flask temps will increase and begin sending vapor up. ... Always keep the joints clean, and dry. When you are finished, those clean and dry joints will not gum up and weld tight, so you will easily be able to remove them. When using ...
rotovap and the pump. Never use a liquid nitrogen to cool the trap as this can cause condensation of liquid oxygen. Empty the trap after each use. If a trap becomes clogged, immediately shut off the vacuum, disconnect the trap and e nsure it is open to atmosphere to prevent explosion. Allow the trap to thaw in a fume hood to empty. 7.
Rotovap Startup 1. Turn on the chiller 5-10 minutes prior to evaporation. 5 minutes = 0 C 10 minutes = -20 C • You must wait at least 5 minutes, or uncondensed vapors will enter the pump. 2. Turn on the water bath. • Set temperature to 40 C • Higher for high boiling solvents 3. Secure your flask with plastic Keck clamps.
The motor in the rotovap spins a round-bottom flask rapidly, coating the walls of the flask ... round-bottom flasks used in the organic labs have 14/20-sized joints, but the glass parts of the rotovap use larger 24/40 joints (see Chapter 5). Figure 14-1: The general layout of a rotary evaporator, or rotovap. ...
What is a rotovap? A rotary evaporator is a device used in chemical laboratories for the efficient and gentle removal of solvents from samples by evaporation. A rotovap acts like a filter to separate the unwanted components in the extract as a final step to crude oil. The rotovap is a simple concept with a lot of moving parts.
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