Welch® Dry Pumps Applied Vacuum Technology for Rotary Evaporators Pump: Solution Programmable Self-Cleaning PTFE System Solvents Distilled: Rotary Evaporator Self-Cleaning PTFE System Stand-Alone PTFE Pump Key Advantages: Strip DMF & High B.P. Solvents3 Patent pending high vacuum technology for Models 202801, 202701, 2042B-01 and 2032B-01. Quiet, Oil-free Virtually maintenance-free solution for laboratory environment. Cost effective Pump solution to fit your vacuum control and budget requirements. Application certified Developed and tested by Welch for use with rotary evaporators to carry out simple solvent distillations, stripping volatiles, and reflux reactions. Note: 1) Pumps listed are 115V, 60Hz. See website for other electrical requirements. 2) Cat. No. 202501 has a dial read-out in inches Hg. Model 202701 and 202801 have absolute pressure reading in Torr. 3) Strip 2-4 ml/min of DMF at 35˚ C when using dry ice condenser. Gardner Denver Thomas, Inc., Welch Vacuum Technology 7301 N. Central Avenue, Skokie, IL 60077 Phone: (847) 676-8800 Fax: (847) 677-8606 Email: [email protected] Web: www.welchvacuum.com Welch, DRYFAST and DRYFAST ULTRA are registered trademarks of Gardner Denver Thomas, Inc., Welch Vacuum Technology.

Welch® Pumps Applied Vacuum Technology for the Laboratory Application Welch Vacuum Pumps & Systems Flow Rate x Vacuum Unit Photo “Rotovap System” Volatiles, Low B.P. B.P. <100˚C Samples 0-5 Liter DRYFAST® System with regulator, gauge, condensate jars, self-cleaning auto-purge 35 L/min. x 9 Torr (12 mbar) “High Boiler System” DRYFAST ULTRA® System & Pump 35 L/min. x 2 Torr (2.7 mbar) DMF, Toluene, other non-volatiles Samples 0-5 Liter 35 L/min. x 2 Torr (2.7 mbar) “Concentrator Pump” DRYFAST ULTRA Pump 35 L/min. x 2 Torr (2.7 mbar) DRYFAST ULTRA SYSTEM Compatible with: SpeedVac® & CentriVap® Vacuum...