Using a Pamas particle counter for parts cleanliness

courtesy of Pamas

partsYou can measure the cleanliness of components and packing materials with an automatic particle counter. The surface cleanliness is analysed indirectly by
removing any particles from the surface through flushing, hosing, flooding or placing the item in an ultrasonic bath. The rinsing fluid is analysed with the liquid
particle counter. The surface contamination is calculated by comparing the results with a blank measurement of the clean rinsing fluid.


In compliance with the standards ISO 16232 and VDA-19, the result generates the size of each particle and their number. Unlike a microscopic membrane analysis, an automatic particle counter provides immediate and instantaneous measuring results. 

PAMAS particle counters are equipped with a volumetric sensor measuring cell, making analysis of 100% of the sample possible. The measuring results are delivered immediately after the cleaning and analysing procedure. A time and labour-consuming analysis of the results through trained and experienced lab operators is not required. 

The standardised calibrating procedure of an automatic particle counter represents another key benefit since it allows traceability to a Standard Reference Material. In compliance with the calibration standard ISO 11171, an automatic particle counter is calibrated for smaller particle sizes up to 70 µm(c) with ISO MTD test dust, which is manufactured using certified Standard Reference Material of the United States National Institute of Standards and Technology (NIST). Calibration of larger particle size channels > 70 µm(c) is done according to ISO 21501 with monodisperse latex spheres.

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