A rotary evaporator is a device used in chemical laboratories for the efficient and gentle removal of solvents from samples by evaporation. The process of rotary evaporation is most often used to separate solvents with low boiling points, such a n-hexane or ethyl acetate, from compounds which are solid at room temperature and pressure. However, careful application also allows for the removal of a solvent from a sample containing a liquid compound, if there is minimal co-evaporation (azeotropic behavior) and a sufficient difference in boiling points at the chosen temperature and reduced pressure.
The newly re-designed Ai SolventVap 20L (evaporating flask capacity) series rotary evaporators come with all PTFE valves for solvent-resistant operations. We also lowered the height of the height of assembled unit, for easy installation and ease of use and storage. Also come with them are vertical glassware and digital temperature/rotation control. Its optimized bath volume allows for rapid heat-up times. The condenser unit has specially designed glass tubes that utilize surface area extremely efficiently. That’s why our SolventVap evaporators consistently deliver reliable and reproducible process results that are usually reserved for more costly systems. Another important aspect of the SolventVap is the safety features, which includes dry-run protection, water bath over-temperature shut-off protection, and fuse protection.
Rotary evaporator features a specially designed motor and worm gear, which provides constant rotation at speeds from 10 to 130 rpm. As the flask containing the solvent is rotated, it continually transfers a thin layer of liquid over the entire inner surface. This gives a very large surface area for evaporation, which is caused by the gentle heating from the water bath. The rotating system is fitted with a special seal that allows the apparatus to be placed under vacuum, effectively reducing the boiling point of the solvents and removing the vapor phase, making the process much more efficient. Each unit is also equipped with an easy-to-use vacuum release and a continuous feed system, which allows the solvent to be constantly drawn into the rotating flask without needing to stop the operation.
Digital water bath operates from ambient temperature to 99°C with PID temperature control stepping at 0.1°C increments. Heating coils are located directly inside the pan for the most efficient heating possible. A built-in overheat protector will shut down power, should the controller fail.
Standard Glassware Set includes 20 liters round-bottomed evaporating flask, 10 liters round-bottomed receiving flask, and vertical condenser. Rotary evaporators with vertical glass condenser are great for distillation of solvents with higher boiling points.
Features
- Solvent-resistant PTFE and Viton gaskets, ensuring long-time operation.
- Specialized motor with extremely compact, intermeshed worm and worm gear provides precise driving for very quiet, vibration-free operation.
- Downward-condensing vacuum connection design ensures safe vacuum operation.
- Motorized water bath lifting for precise control.
- Easy, straight-forward visual operation with digital speed and temperature display.
- PID temperature controller ensures accurate temperature control is maintained.
- One year warranty and lifetime US-based parts and service support.
Your safety is important to us! Please use caution when operating. Users of glass reaction equipment must take all necessary precautions to avoid contact with rotating parts, particularly entanglement of loose clothing, hair, necklaces, or other jewelry. Under these circumstances, the winding action of the rotating parts can draw the user(s) into the apparatus, resulting in breakage of glassware, burns, and/or chemical exposure. Extra caution must also be taken when operating with air-reactive materials, especially under vacuum. A leak can draw air into the apparatus and cause a violent reaction to occur.
Specifications
| Electrical requirements | 380-415V 50/60Hz 3-phase, 6A, 4300 watt (rotation motor: 250 watts) |
| Evaporating flask | Capacity: 20 liters Maximum load: Not to exceed 60% of the flask’s capacity Sealing flange: 4.9″ (125mm) diameter Rotation speed: 10 to 130 rpm Evaporating speed: 5 liters/hour (water), 11 liters/hour (alcohol) |
| Receiving flask | 10 liters |
| Condenser | Glassware: Main + auxiliary triple-circulating cold traps, vertical Chilling fluid conneciton: 3/8″ hose barb x 4 (2 on main + 2 on auxiliary) |
| Working environment | -15 to 35°C |
| Water bath | Temperature range: ambient to 99°C Temperature controller: digital Dimensions: 450 x 260 x 300 mm (WxDxH) Material: stainless steel Media: water Number of heaters: two Drain port: one Exterior liner: rubber Lifting: motorized Maximum lifting distance: 190 mm |
| Vacuum | Vacuum level: < 3 torrs / 0.4 kPa Vacuum sealing: PTFE + Vinton gaskets Vacuum connection: 3/8″ hose barb x 1 |
| Swivel casters | Four, built-in with locks |
| Safety | Dry-run, over-temp shut-off, built-in circuit breakers |
| Weight and dimensions | Shipping: 108 kg (evaporator), 59 kg (glassware) Unit: 1250 x 600 x 2100 mm (WxDxH) Shipping: 1040 x 610 x 1190 mm (evaporator), 860 x 740 x 790 mm (glassware) (WxDxH) |
| Part description | Quantity | Part image |
| Ai SolventVap 20L rotary evaporator and water bath | 1 set |  |
Vapor filtering bottle | 1 pc |  |
| Vertical main and auxiliary condensers, glass | 2 pcs |  |
| 20Lround shaped rotating evaporating flask, glass | 1 pc |  |
| 10L round shaped receiving flask with 2 vacuum ports, 1 drain port and PTFE open/close valve | 1 pc |  |
| Three-way tee vapor buffering flask, glass | 1 pc |  |
| Glass vapor duct with seal (pre-installed) | 1 set |  |
| PTFE vacuum sealing kit (pre-installed) | 2 pcs |  |
| Receiving flask glass vacuum port with PTFE open/close valve | 2 sets |  |
| Glass material feeding port with PTFE open/close valve | 1 set | .jpg) |
| PTFE extension feeding hose | 1 pc |  |
| Stainless steel pole | 1 pc |  |
| Mechanical vacuum gauge with 3 hose barb connectors | 1 pc |  |
| Rubber-wrapped condenser support and bracket | 2 pcs |  |
| Rubber-wrapped receiving flask support | 1 pc |  |
| Flask quick clamp | 6 sets |  |
| PTFE centering ring for sealing flanges | 6 pcs |  |
| Chilling fluid connector x 4, vacuum connector x 1 | 5 sets |  |
| Evaporating flask cap spanner | 1 pc |  |
| Allen key and inner hex screws | 5 pcs |  |
| User’s manual | 1 pc |  |
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