Phosphorus pentoxide has the smell of garlic.

Best Regards,
Garrett Oakes

EV Group
invent * innovate * implement
Regional Sales Manager North America - Direct: +1 (480) 305 2443, Main:
+1 (480) 305 2400 Fax: +1 (480) 305 2401
Cell: +1 (480) 516 6724
E-Mail: G.Oakes@EVGroup.com, Web: www.EVGroup.com

-----Original Message-----
From: Nicolas Duarte [mailto:nbd110@psu.edu]
Sent: Friday, November 07, 2008 5:47 AM
To: General MEMS discussion
Subject: [mems-talk] Smelly Wafers

I just started a new job where, after an HF etch to remove phosphor
glass, the wafers have a pungent garlic smell to them.  I asked my
coworkers about this and they said it was "normal," but I have never
encountered a wafer that had a scent.  It has been my experience that
where there is smell there is a contaminant so I was wondering if
anyone know what the potential source of this smell may be.

Nicolas Duarte