ISO 21501 for particle size determination has a particular section that is of relevance to the cleanroom sector. Steve Kochevar, Particle Measuring Systems, reviews Part 4 on calibration procedure and verification method for airborne particle counters
ISO 21501 has the title Determination of particle size distribution — Single particle light interaction methods. The standard comprises four parts, of which, only Part 4 will be discussed here.
http://www.cleanroom-technology.co.uk/technical/article_page/Get_calibration_up_to_ISO_standard/56451
One issue faced by developers of outdoor robots is the calibration of satellite navigation systems and the validation and verification of the state estimator after filtering has fused the satellite information with odometry. Magnaflux
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