Welch® Dry Pumps Applied Vacuum Technology for Water and alcohol solutions2 Aqueous, acidic, or organic solutions Stand-Alone Diaphragm Pumps:DRYFAST® PTFE Pump9 Torr 35 L/minCat. No. 2044B-01 DRYFAST ULTRA® PTFE Pump Key Advantages: Quiet, Oil-free Cost effectiveCompact Virtually maintenance-free solution for laboratory environment. No oil changes, no cold trap for water/alcohol solutions. Smaller footprint than oil pump saves lab space. Application certified Developed for selected centrifugal concentrator applications to efficiently evaporate aqueous, acidic, or organic solutions when properly configured and with the chemical resistance to pump aggressive chemicals such as TFA, HCl, formic acid and acetic acid. 1) Cold traps are not required to protect these pumps. Cold traps will condense vapors and increase effective pumping speed of system leading to improved drying times for aqueous, acidic or organic (B.P.>100 °C) solutions. 2) Cold traps are not required for water and alcohol solutions since these solutions are volatile. 3) Pumps listed are 115V, 60Hz. See Welch web site for other electrical requirements. WELCH A Gardner Denver Product 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® PumpsApplied Vacuum Technology for the Laboratory Welch Vacuum Pumps & Systems Flow Rate x Vacuum Unit Photo Schlenk Line Freeze Dryer Cell Harvester Plate Washer Vacuum Oven “Rotovap System” DRYFAST® System with regulator, gauge, condensate jars, self-cleaning auto-purge