Air borne particulates
ISO clean room stands ISO 14644-1 and ISO 14698
Chart in Wikipedia

Class 7 and higher does not measure the smaller particles.
Instruments that measure this level are less than $2k.



On Thu, Apr 13, 2017 at 10:34 AM, Bhanu Sood <[log in to unmask]> wrote:

> Does this work for you?
>
> ASTM E1382 - 97(2015): Standard Test Methods for Determining Average Grain
> Size Using Semiautomatic and Automatic Image Analysis
>
> (aka ImageJ)
>
> On Thu, Apr 13, 2017 at 10:31 AM, Douglas Pauls <
> [log in to unmask]> wrote:
>
> > Good morning all,
> > Does anyone know of a standard test method to quantify particulates?
> ASTM,
> > SAE, IEC, etc?  IPC has none that I know of.
> >
> > Doug Pauls
> > Principal Materials and Process Engineer
> > Rockwell Collins
> >
>
>
>
> --
> Bhanu Sood
> Tel: (202) 468-8449
>