Our Products

Rotary Evaporator

Laboratory equipment

Jacketed Reactor

Contact Us

We Cherish All Interactions

Increase your distillation efficiency

Chloroform CH Cl 3 332 Cyclohexane C 6 H 12 154 Dichloromethane, methylene chloride CH 2 Cl 2 699 Diethylether C 4 H 10 O 838 trans-1,2-Dichloroethylene C 2 H 2 Cl 2 317 Diisopropylether C 6 H 14 O 251 Dioxane C 4 H 8 O 2 68 Dimethylformamide (DMF) C 3 H 7 NO 6 Ethanol C 2 H 6 O 97 Ethylacetate C 4 H 8 O 2 153 Heptane C 7 H 16 77 Hexane C 6 H .

Dissolve the free acid in chloroform and extract the .

Dissolve the free acid in chloroform and extract the organic solution from the water using a separatory funnel. Wash the organic layer once with water, dry with MgSO 4 and decant off organic phase. Rinse the solids once with fresh chloroform and add to the organic layer. Transfer to a polarimeter tube and measure the optical rotation (three times). .

Extraction and Determination of a Distribution Coefficient .

Jul 19, 2011 · Rotovap Tips. Some general tips when using a rotovap: The rotovap is glass under pressure, so always wear goggles- there's a slight chance the glass could shatter. The round bottom flask shouldn't be more than ~40% full of solvent or else you will get "bumping" (solvent slashing around- you'll lose product this way).

Best Value Vacs Water Circulating Vacuum Pump - YouTube

May 30, 2018 · #Vacuumpump #BVV #Watercirculator Water Circulating Vacuum Pump demo and explanation of its features.

Industrial Evaporation Solutions Reliable performance for .

6 You look for a versatile and convenient configuration for a wide range of application and sample vol-umes of up to 10 liters. The «Industrial Evaporation Scale up» solution matches various distillation

The Rotary Evaporator

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 assembly into the heated water bath using the handle, as shown at the right. Press the lever in the handle to

Supporting Information

sulfate. After filtration, the organic solution was concentrated under reduced pressure/rotovap. Finally, the crude solid was recrystallized from a 1:1 solution (by volume) of chloroform:ethanol to provide pure (1) as long colorless needlelike crystals (21.11 g, 88% yield).

Distillation and Rotary Evaporation | Engineering .

The chloroform hydrogen is relatively acidic and will hydrogen bond with the carbonyl group of acetone. Is Raoult's law likely to hold true for a solution of acetone and chloroform? . When using a rotary evaporator (rotovap) the round bottom flask is often submerged in a warm water bath in order to speed up the evaporation process. If the .

Types of Solvent Evaporators - An Overview | BioChromato

Jul 30, 2018 · A rotary evaporator (rotovap) works by placing the sample under vacuum thereby lowering the boiling point of the solvent. Typically, a round bottom flask is used where it is lowered in a heated water bath. The flask is rotated to increase the surface area and provide an even transfer of heat.

49 questions with answers in ROTARY EVAPORATION | Science .

Jun 18, 2020 · Rotary evaporation is not an option because I need to 12-15 samples per batch of experiments, and they are in small volumes, i.e - 6 ml of chloroform containing the extracted lipids.

Putting the Rule of 20 Into Practice | Blog | Rotovaps.net

In a previous post, we introduced the "rule of 20," also known as the "20/40/60 rule" or "Delta 20 rule."Here we explain the rule in greater detail and discuss how to put it .

How can the rotary evaporator be used safely? - Rotovap

The vacuum degree is the most important process parameter of rotary evaporator, and the users often encounter the problem that the vacuum degree cannot reach, which is often related to the properties of the solvent used.The biochemical pharmaceutical industry often uses acetic acid, ethanol, propanol, ethyl ester, diethyl ether, petroleum ether .

Lessons Learned | Office of Research Safety | The .

The University of Chicago is a private, nondenominational, culturally rich and ethnically diverse coeducational research university located in Hyde Park, Chicago.

What is the best method of removing solvents like .

The protocol calls for adding a 2:1 chloroform:methanol mixture, homogenizing, and rotating at 4C overnight. The next day, KH2PO4 is added and the mixture is split into three phases.

Facilities | Lynd Polymer Group

Heidolph rotovap: Removes solvent or other volatiles from a reaction mixture. A big advantage of this unit is that the control panel can be removed from the hood with the sash closed. All aspects of the rotovap can then be controlled from the safety of being behind the sash outside the hood. . Typically on chloroform or DMF with LS, DLS, and .

How to Select a Vacuum Pump for Rotary Evaporation? - Lab .

Applying vacuum using a pump is either helpful or necessary in most rotovap applications as it reduces the pressure within the system. This lowers the boiling temperature of the solvent resulting in faster evaporation and safer rotary evaporator operation. . benzene and chloroform. The removal of solvents with high boiling points, such as .

Transdermal Delivery of Insulin: An Application of pH .

one for the sample reading. After the lipids were mixed in this composition, the chloroform was evaporated using a rotovap and the dried lipid film was then hydrated, the background liposomes with 1 mL pH 4.0 buffer, and the sample with 1 mL of the insulin solution. The solutions were then left to anneal for two hours at 50°C.

Rotary evaporator - Wikipedia

A rotary evaporator (or rotavap /rotovap) is a device used in chemical laboratories for the efficient and gentle removal of solvents from samples by evaporation.When referenced in the chemistry research literature, description of the use of this technique and equipment may include the phrase "rotary evaporator", though use is often rather signaled by other language (e.g., "the sample was .

Rotary Evaporation - an overview | ScienceDirect Topics

H.L. Lord, E.A. Pfannkoch, in Comprehensive Sampling and Sample Preparation, 2012. 2.27.3.3 Sample Evaporation. Some liquid extraction methods include an off-line evaporation step (such as rotary evaporation, nitrogen blowdown, or Kuderna–Danish evaporation) to concentrate the sample before injection.Some workstations are available that provide evaporation capability.

Erowid Chemistry Vaults : Organic Solvents Table of Properties

Notes: "M" in the water solubility column means completely Miscible in water. The values in the table below except for relative polarities have been extracted from MSDS compilations (see section II-B-4 of the Chemistry Webercises Directory) or the ChemFinder Web Server.Values for relative polarity have been extracted from: Christian Reichardt, Solvents and Solvent Effects in Organic Chemistry .

Removing DMSO from a solution : chemistry

Removal of DMSO is a pain in the arse, we do it on our rotovap occasionally. Normally involves cutting the DMSO with some other solvent (we use n-heptane, because i use it for DMF removal. It is not a good DMSO azeotrope, but really not many things are) and then boiling the hell out of it on a rotovap .

Preparation of fatty acid or phospholipid vesicles by thin .

Always use glass tips for pipetting chloroform. Step 1 Formation of a thin lipid film. Overview. Formation of a thin layer of dry lipid film in a round-bottom flask. Duration. 30 min . 1.1. Pipette the prepared solution of the desired lipids in a non-polar solvent into a 10 ml round-bottom flask.

My brominations are failing : chemistry

Rotovap cyclohexane and dissolve into chloroform, filter succinimide out. Wash chloroform with water (or NaOH solution or brine, done it all), usually about 200 mL total to remove succinimide. Dry over magnesium sulfate and rotovap chloroform. Run NMR and check peak shifts of methyl protons.

SOP: PP018.1 Updated 1/31/13 Isolation of Total Lipid .

4. Chloroform, HPLC-grade (VWR BJ049-1) 5. Methanol, HPLC-grade (VWR BJ230-1) 6. Magnetic stir bar, large 7. Parafilm 8. Magnetic stir plate 9. Reach-in incubator, 55°C 10. Whatman filter paper, 17 CHR 11. Buchner funnel 12. Graduated cylinder, 1000 ml 13. Separatory funnel, 2000 ml 14. Water, HPLC-grade (VWR BJ 365-4) 15. Round bottom flask .

Best Value Vacs Water Circulating Vacuum Pump - YouTube

May 30, 2018 · #Vacuumpump #BVV #Watercirculator Water Circulating Vacuum Pump demo and explanation of its features.

Gd(III)-based Enzyme-Responsive Nanoprobes as MRI .

the methanol was removed using a rotovap. The remaining liquid was then neutralized with saturated sodium bicarbonate (NaCO. 3. H). The aqueous solution was then extracted three times with chloroform, using a separatory funnel. In the funnel, the top layer consisted of the aqueous solutions and the

Why You Should Choose Lanphan Rotovap? - Lab Instruments .

Why You Should Choose Lanphan Rotovap? 2016-08-03 10:42:00 Nina Original 1435 Summary: Laboratory rotary evaporator is an necessary lab instrument mainly used for the evaporation, concentration, crystallization, drying, separation and solvent recovery.. Laboratory rotary evaporator is an necessary lab instrument mainly used for the evaporation, concentration, crystallization, drying .

Rotary Evaporator Only Information

3 temperatures, but it is a general recommendation to help give an idea of the temperatures for the rotary evaporator. Many manufacturers do not recommend a water bath temperature higher than 60 .

Gd(III)-based Enzyme-Responsive Nanoprobes as MRI .

the methanol was removed using a rotovap. The remaining liquid was then neutralized with saturated sodium bicarbonate (NaCO. 3. H). The aqueous solution was then extracted three times with chloroform, using a separatory funnel. In the funnel, the top layer consisted of the aqueous solutions and the

Removal from Curatives - The Process | Summit Research

With a ratio of 1:1 mic hexane with chloroform – add a 1:1 or 1:2 ratio of your distilled (2nd + pass) product to the co-solvent solution. Create a bed for the chromatography column with suitable media for this process. Media can be purchased direct through summit, or sigma etc. if you have to ask how much it is – you cant afford it.