Rotary evaporator must purchase original authentic accessories

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After starting the vacuum pump, Shanghai Xinzhuang Instrument Co., Ltd. noticed that the vacuum could not be properly maintained. To troubleshoot, check if the bottle mouth is securely sealed, whether the vacuum pump has any leaks, and ensure the shaft sealing ring is in good condition. Additionally, installing a vacuum switch on the external vacuum line can enhance both recovery rate and evaporation efficiency. **Feeding** Using the system's vacuum pressure, liquid material can be drawn into the rotating flask through a hose at the feeding port. Ensure the liquid does not exceed half the volume of the rotating flask. The system allows for continuous feeding, but care must be taken during this process: 1. Turn off the vacuum pump 2. Stop heating 3. After evaporation stops, slowly open the valve to prevent backflow **Heating** The instrument features a specially designed water bath, which should only be powered on after water has been added. The temperature control scale ranges from 0–99°C as a reference. Due to thermal inertia, the actual water temperature may be about 2°C higher than the set value. Adjustments can be made based on usage. For instance, if you need a water temperature of 1/3–1/2, use the connector to remove the power plug when necessary. **Rotation** Turn on the electrical box switch and adjust the knob to achieve the optimal evaporation speed. Be cautious to avoid fluctuations in the water bath and ensure the cooling water is turned on. **Solvent Recovery** Begin by opening the feed switch to release pressure, then turn off the vacuum pump and carefully remove the solvent from the collection bottle. **Maintenance Instructions** 1. Before use, inspect the instrument thoroughly—check for glass damage and ensure all interfaces are properly aligned. Handle with care. 2. Wipe each interface with a soft cloth or napkin and apply a small amount of vacuum grease. Always cover the grease after use to prevent dust and sand from entering. 3. Do not tighten the interfaces too much. Loosen them slightly to avoid long-term locking, which may damage the connectors. 4. Always turn on the power switch first, then gradually increase the speed. When stopping, stop the machine before turning off the switch. 5. Avoid over-tightening PTFE switches, as this can easily break the glass components. 6. After each use, wipe down the machine’s surface with a soft cloth to remove oil stains, residues, and solvents. Keep it clean. 7. After stopping, loosen the PTFE switches to prevent deformation of the piston due to prolonged operation. 8. Regularly clean the sealing rings by removing them, checking the shaft for dirt, wiping it with a soft cloth, applying a small amount of vacuum grease, and re-installing the ring. 9. Never allow water to enter the electrical components. Keep them dry at all times. 10. Only use original, authentic accessories. Using third-party parts may cause serious damage to the equipment. Shanghai Xinzhuang Instrument Co., Ltd. specializes in the development, production, and sales of low-temperature experimental equipment and ultrasonic devices. The company is known for its energy-efficient and environmentally friendly Rotary Evaporators under the LNB brand. With professional temperature control technicians and advanced production facilities, the company ensures high-quality products and safe, reliable performance. Whether you're looking for affordable solutions or cutting-edge technology, Shanghai Xinzhuang offers a wide range of options tailored to your needs.

Slot Slider Plate

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  • A sliding door sign consists of a backing name plate that can have any text. You choose the message you want to display.
  • For example you may wish to have Occupied/Vacant, In Session/Available, Do Not Disturb/Welcome, In/Out, In Use/Available, Available/Unavailable, Do Not Enter/Enter, Meeting In Progress/Vacant.

Slider 1



  • The backing name plates for the sliding door signs come in a wide range of colour combinations.
  • The front panel slides back and forth on a separate track. This sliding panel reveals the message on either side of the sliding sign. Eg In Session on one side, Available on the other. The holder for the sliding sign has end caps at either end. This prevents the panel from accidently being pushed out of the holder.
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Plastic frame plate 33

Plastic frame plate 43


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