Rich:
You are in the land of snow and ice.
Any chance that crunchy snow melt (calcium chloride) that has been ground
to a powder and blown onto the PCA?
It dries out, falls off, is stepped on and makes a mess.

If you don't change shoes, the stuff sticks to the lug patterns of the non
leather soles and ends up on all the floors showing up as a white haze.

Larry Dzaugis


On Mon, Feb 10, 2014 at 5:04 PM, Ed Popielarski
<[log in to unmask]>wrote:

> FOD resulting from working one's fingers to the bone.
>
> Ed Popielarski
> Engineering Manager
>
>
>                                970 NE 21st Ct.
>                               Oak Harbor, Wa. 98277
>
>                               Ph: 360-675-1322
>                               Fx: 206-624-0695
>                               Cl: 949-581-6601
>
>
> https://maps.google.com/maps/myplaces?hl=en&ll=48.315753,-122.643578&spn=0.011188,0.033023&ctz=420&t=m&z=16&iwloc=A
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Richard Kraszewski
> Sent: Monday, February 10, 2014 2:08 PM
> To: [log in to unmask]
> Subject: [TN] Risks Associated with Calcium
>
> I am occasionally seeing irritating low levels of calcium in some
> assemblies that we test via ion chromatography.
>
> Some organizations required spec levels as low as <1 ppm.
>
> My questions to you techies is:
>
> #1 Besides wash water are there any other sources of calcium that come to
>  mind?
>
> #2 is there any real value in having Calcium specs down as low as 1 ppm?
>  (I suspect not and this spec was merely carried over from the
> semiconductor industry where it may have more value)
>
> CH65 is of some help here in that is does speak much more of the evils of
> Na that Ca& Mg, but not as much as I had hoped.
>
> Thoughts??
>
> Rich  Kraszewski
> Senior Process Engineer
> Plexus Engineering Solutions
>
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