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ISO 14644-1 maximum particulate concentration limits concern

R

rmacd

#1
Hello to all,

ISO 14644-1 identifies separate limits for 0.5 and 1.0 um particle size limits, while my particle counter combines these two ranges in one reading.

Is it appropiate to apply the total of both these limits to the single reading of my particle counter?

Thanks in advance for your help.
 
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M

MIREGMGR

#2
Is it appropiate to apply the total of both these limits to the single reading of my particle counter?
No. If you're going to use that counter, you must instead assume that either all of the particles you measure are in the 0.5um range, or all of them are in the 1.0um range, and you must satisfy both ranges.

The alternative is to use a meter that measures in a manner that is consistent with the standard.
 
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