With the new ChemStar Dry, you get the advantages of two combined technologies: Roots blower and diaphragm vacuum pump. The result is an oil-free, software- driven vacuum system, ready to work on your tough chemical applications – clean, fast, and thorough.
ChemStar Dry pumps quickly down (9 m³/h) to the working range for most evaporative operations (2.0 to 0.1 mbar) with an ultimate pressure of 10-2 mbar. The innovative electronically controlled vapour load optimises the pumping speed control. You can even pump corrosive vapours, since all wetted parts of the system are coated with PTFE and other proprietary coatings so they are chemical resistant. The integrated self-cleaning function also contributes to the system’s long lifetime and enables repeatable results.Take advantage of its state-of-the-art technology for optimal operating conditions and results.ChemStar Dry is suitable for all applications where high gas flow and deep vacuum are needed.
Oil-Free : no oil back-streaming, no oil maintenance/disposal, cleaner work place, cleaner samples, less maintenance
Plug and Play: patented software control, auto speed control from atm to 0.07 mbar, self-cleaning function, protection from surges
Low vacuum mostly without cold trap: no dry ice or trap apparatus needed, less maintenance, lower cost of ownership, extra bench space
Chemical Resistant: pumps corrosive vapour/gases, TFE and proprietary coatings
Connection kits available. See "Service/Accessories" parts.
Max. pumping speed at 50 Hz in m³/h (l/min)
Max pumping speed at 60 Hz in m³/h (l/min)
Ultimate pressure in mbar (Torr) without gas ballast
DN 25 KF
DN 25 KF
Sound level (dB)
Dimensions (W/D/H) in mm
Weight kg (lbs)
Service / Accessories
Starter Kit ChemStar® Dry 2070 - 102950
Schlenkline - Adapter Kit - 102951
Freeze Dryer - Adapter Kit - 102952
Welch is part of Gardner Denver Medical Group, a leading global manufacturer of flow control products for medical, life sciences and selected other industries. A global production network with seven modern manufacturing facilities throughout the U.S., Europe and Asia allows for fast and flexible reactions to the customer needs.