iv Model 3321 Aerodynamic Particle Sizer
®
Spectrometer
Knowing that inoperative or defective instruments are as detrimental to TSI as they are to our
customers, our service policy is designed to give prompt attention to any problems. If any mal-
function is discovered, please contact your nearest sales office or representative, or call TSI
at 1-800-874-2811- (USA) or (651) 490-2811.
TSI, TSI logo, Aerodynamic Particle Sizer, and Aerosol Instrument Manager are registered
trademarks of TSI Incorporated. APS is a trademark of TSI Incorporated.
Microsoft, Windows, are registered trademarks of Microsoft Corporation.
Swagelok is a registered trademark of Swagelok
®
Companies, Solon, Ohio.