>Now I need to test for the ppm and particle size . Does anyone have some
>addresses for labs that you can recommend from personal experience?? I have
>some stashed in archives, but would have to spend time digging. Thanks in
>advance!
>

I use a local lab for work related purposes testing for dissolved metals in
waste
water but they also do work for home owners and smaller companies. I highly 
recommend them:

Wright Lab Services
34 Dogwood Lane
Middletown, Pa.   17057

717-944-5541 Voice
717-948-0143 Fax

Best regards,
Jim Moritz