Rotational Vacuum Concentraor
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SpeedDry Rotational Vacuum Concentrators

The Flexible Line of Products for Optimal Concentration

Rotational Vacuum Concentrators: Evaporation of Temperature Sensitive Samples with Care This process is used for the evaporation, drying, purification and concentration of samples. This method is an alternative to ■ Distillation systems and rotational evaporators use high temperatures and are working next to normal pressure. ■ Freeze-drying systems operate at very low temperatures and high vacuum levels. Although sublimation (the direct transformation from frozen solid to steam) protects the sample, it is time consuming. Rotation vacuum concentrators provide a method between the two above...

SpeedDry Vacuum Concentrators: Performance that Speaks for itself . Magnetic drive with speed control: centrifugal force eliminates bumping and foaming, no rotating parts outside of the rotor-chamber, the chemicals remain within sample chamber. . Simple interface with the push of a button: Concentrator Display (CD) interface*, automatic sequence for start and stop, vacuum on and off depending on rotor speed, automatic aeration, sample is prevented from spitting. . Fast evaporation: high input of energy through electrical heating of rotor chamber, can be set in 1°C intervals from 30°C to...

Concentrator Display (CD) Interface . microprocessor system with LCD display . speed control . rotor chamber heating can be set in 1°C intervals from 30°C to 60°C (80°C) . pre-set time from 5 minutes to 12 hours . LC display shows important process and system parameters: - rotor temperature - time - open/close of cover - rotor speed - state of vacuum ("evacuated / aerated") - visual alarm with error code - optional data-interface . No limits to your applications: system components can be individually combined, cooling traps range from 2-4 liters and temperatures of -50/-60/-90 and -105°C,...

SpeedDry Product Range for Vacuum Concentrators Basic Appliances in Three Different Sizes RVC 2-18 CD . the mini concentrator: inexpensive and compact table-top concentrator suited for smaller sample volumes . special DNA and HCL systems available . chemical resistant diaphragm pumps (2m3/h suction capacity, 7 mbar final vacuum), standard, vacuum system with lower vacuum and vacuum controls, optional . normally used without cooling traps System solutions for special processes The complete RVC 2-18 DNA system is designed for the concentration of DNA / RNA in ethanol/methanol / water...

RVC 2-33 CDplus . The maxi concentrator: a multipurpose system for large sample volumes with practically all types of solvents . rotor capacity 216 x 1.5/2.2 ml tubes up to 12 x microtiter plates or 4 x deep-well plates . stainless steel/glass compound cover with window (corrosion proof) . high-performance drive system, 1.550 min-1 (500xg f. micro tubes) prevents bumping and foaming (e.g. with DCM) . practically tolerant to imbalance (> 50 g) . c hemical resistant diaphragm pumps (2m3/h suction, 9 mbar final vacuum), standard, vacuum system with lower vacuum and vacuum controls, optional,...

· Particularly solvent-resistant unit with a stainless steel chamber, safety glass lid and magnetic drive without a shaft exit to the outside. Suitable for DMSO, ACN, TFA. · CDplus control unit with a ramp programming function for pressure and temperature (16 programs max.). · Halogen IR lamps provide optimal energy input for fastest possible evaporation. · Control of the energy supply as a function of the sample vessel temperature, plus an additional measurement of the product temperature in order to avoid thermal damage. · Robust, non-contact measurement data transfer (Triple TMM) from...

Chemical Resistant Diaphragm Vacuum Pumps / Hybrid Vacuum Pumps Chemical Resistant Diaphragm Vacuum Pumps / Hybrid Vacuum Pumps . high chemical resistance (parts in contact with samples made of PTFE compounds), continious oil cleaning within the chemically resistant hybride pump RC-6 Chemical membrane pumps are mechanical, oil free vacuum pumps. Final vacuum values of up to 2 mbar can be achieved depending on the type of pump used. They are particularly useful for solvents with low to medium level boiling points. The parts that come into contact with the substance are made of corrosion...

Cooling Traps for Larger Volumes The rate of evaporation is not only influenced by the energy input, but also by the suction capacity of the diaphragm pump. It is significantly more efficient to use a cooling trap (cryo-pump), instead of bigger vacuum pumps. Processes involving water solutions benefit from cooling traps, organic solutions are less critical due to their higher vapour density. The larger evaporation area surface sample is what causes the "bottle-neck" in the pump, not the volume and number of the vials. CT02-50 and CT 04-50 . 2 liters volume (CT02-50), 4 liters (CT04-50) ....

Examples for Evaporation Times Evaporation time is dependent on the type of solvent used. As a rule, solvents with a low boiling point (i.e. DCM methy- lenchloride, chloroform, methanol, hexane) evaporate more easily and quickly than solvents with high boiling points (i.e. water, DMF, DMSO, NMP). Examples are shown in the table below. The energy input into the product through the heating of the rotor chamber also influences evaporation. Evaporation time is reduced through this source, particularly in solvents with high boiling points (also water-based substances). The remai- ning product...

Common Solvents for RVC - Application Data Used for following solvents: solvents low to middle solvents high boiling special RVC 2-18 system boiling points points (in conjunction with vacuum pumps and cooling traps) ethanol (EtOH) methanol (MeOH)

Technical Data Rotor speed (min–1) (adjustable with controller CDplus) Relative centrifugal force (rcf) Suggested vacuum pumps (other combinations possible) suggested cooling traps (other combinations possible) CT 02-50 directly to freeze dryer CT 02/04-50 ALPHA 1-2 / 2-4 Beta 2-4 LT directly to freeze dryer Temperatur range (°C) Process vacuum depending on pump system, max. (mbar) Dimensions (mm, w x h x d) Weight (kg) Electrical connection (V/Hz) (other voltages available) Max. power consumption (kVA) Max. current (A) Max. ambient temperature, climate category SN (°C) (higher temperatures...