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It was apparent only for the number concentrations of coarse particles measured with an optical particle counter.
Note that the reported diameter never drops below the lower threshold of the particle counter (1 [micro]m for the counter used here): at very small [DELTA]n when no peak is observed in the particle size distribution, the particle counter only reports particles having larger than average scattering.
The AXI Portable Particle Counter utilizes advanced laser-based sensing technologies to produce results that are both accurate and repeatable.
In this measuring method the aerosol particle counter is connected to the computer, to which data are sent and recorded.
Particle Instruments; Condensation Particle Counter 3007.
The results were obtained using an optical particle counter, technology that has some limitations, such as the possibility of interferences due to coincidence losses in particle counts at high particle concentrations.
The upstream and downstream aerosol concentrations and size distributions were measured by a Scanning Mobility Particle Sizer (SMPS) spectrometer (Model: SMPS 3936, TSI, USA) including a long Differential Mobility Analyzer (DMA) and a Condensation Particle Counter (CPC).
Substantial changes in the investigations of the traffic pollution dispersion near roadways were obtained during the experiment in the vicinity of roadways in the Los Angeles area using the CPC 3022A aerosol particle counter for measuring the aerosol particle number concentration and the SMPS 3936 aerosol particle seizer for the aerosol particle size distribution with expected error [+ or -] 10%.
This requirement should include samples taken for training on ready-for-use (RFU) equipment, whether from the electronic particle counter (EPC) or the patch-test method.
The latest Icount ACM20 particle counter from Parker Hannifin is now included as test equipment for the determination of dispersed contamination in jet fuel, in line with the Defstan 9191 Jet Fuel Specification.
IDM Instruments Pry Ltd has recently updated its Gelbo Flex Tester with Particle Counter with the new Solair Particle Counter used alongside the machines.