- AVA Control Software
- Benchtop & Hotplate Tools
- Heidolph Instruments
- Huber Temperature Control
- Jacketed Lab Reactors
- Parallel Reaction Stations
What tubing do I require for my Hei-VAP rotary evaporator?
- 591-35000-00MPE: Tube Set for Hei-VAP 12m
What is a manual vacuum controller? When is it recommended?
A manual vacuum controller (part number 591-26000-00) is an optional accessory for either of the following Heidolph rotary evaporators:
- Hei-VAP Core
- Hei-VAP Expert
- Hei-VAP Ultimate
- valve-regulated vacuum pump (not a Vario pump)
- house vacuum
It comes complete with an integrated ceramic vacuum sensor, regulation valve and venting valve. It can be fixed on the condenser shaft above the evaporator or used as stand-alone device with base next to the unit. It is compatible with the same Heidolph rotary evaporators as the manual vacuum controller as well as any other brand of rotary evaporator. For optimal vacuum control, a Heidolph rotary evaporator with integrated vacuum control in combination with a Heidolph Vario vacuum pump is recommended. In this case you wouldn’t need an additional vacuum controller as the vacuum is set using the control panel of the Hei-VAP.
What is a vacuum valve? When is it required?
A vacuum valve (part number 569-00065-00) is a required accessory for the Heidolph Hei-VAP Expert Control and Ultimate Control when used with one of the following vacuum sources:
- valve-regulated vacuum pump (not a Heidolph Vario pump)
- house vacuum
- Rotavac Vario Tec (12 mbar)
- Rotavac Vario Control (2 mbar)
What is the difference between valve-regulated and Vario (speed-regulated) control?
You can choose between valve-regulated and Vario (also known as RPM or speed regulated) vacuum pumps for a rotary evaporator (depending on the rotary evaporator configuration you choose). Valve regulated pumps control the vacuum by opening and closing a valve. The vacuum pump runs at full power at all times; when the vacuum reaches a specific level, the valve is triggered, which opens and releases some of the vacuum. This is a simple, low cost option. Vario vacuum pumps can alter their pumping speed (rpm), offering more precise control of the vacuum and lets the user set their required vacuum level. The advantages of Vario pumps over valve-regulated ones include:
- Increased energy efficiency
- Increased solvent recovery rate
- Reduced bumping/foaming
- Reduced noise and vibration
- Reduced wear on the pump – increased lifetime
What is the AUTOaccurate program? What parts do I need for it?
The AUTOaccurate is an advanced program available with the Hei-VAP Expert Control and Ultimate Control rotary evaporators (not Hei-VAP Core, Expert or Ultimate). The AUTOaccurate function allows for automatic adjustment of the vacuum level based on the temperature increase detected at the condenser by the AUTOAccurate sensor. It then holds the vacuum level at this point until the temperature increase is no longer detected. It can also identify multiple boiling points – multiple solvent distillation is possible without any manual adjustments. The AUTOaccurate temperature sensor (part number 569-00040-00) is required for this program. This temperature sensor is only compatible with the G3 and G3 XL (vertical condensers) and G6 (vertical condenser with valve for reflux distillation) glassware sets. This means the AUTOaccurate program cannot be used with the G1 (diagonal condenser) or G5 (dry ice condenser) glassware sets.
Can I use vacuum with Findenser?
It depends on how you are intending to use vacuum.