Optics: measuring and testing – For size of particles – By particle light scattering
Reexamination Certificate
2011-07-05
2011-07-05
Pham, Hoa Q (Department: 2886)
Optics: measuring and testing
For size of particles
By particle light scattering
C356S338000, C377S010000
Reexamination Certificate
active
07973929
ABSTRACT:
Described herein is a portable, low power consuming optical particle counter calibration verification system and reliable and sensitive methods for verifying the calibration status of a gas or liquid particle counter. The calibration verification systems described herein are useful for quickly determining the calibration status of an optical particle counter at its point of use, as well as for allowing the end user to determine if an optical particle counter is in need of a recalibration before the recommended calibration schedule suggests.
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Greenlee Sullivan P.C.
Particle Measuring Systems, Inc.
Pham Hoa Q
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