[Antennas] Cleaning Grungy Aluminum

[DavidE Benedict]

CBoone at earthlink.net writes:
>I did get my bottle of HFL acid at a local plumber supply warehouse (at
>the
>time I was working for a public utility and they didn't require any
>special
>paperwork from me)...today with EPA, etc you may have a harder time
>getting
>it as John Q Public...
>
>Chris
>WB5ITT

HF is also used extensively in purifying silicon in semiconductor
manufacturing

BE VERY CAREFUL WITH THIS ACID

Please note that at least high strength HF is extremely dangerous to the
human (I don't know about various dilutions). 

HF (hydroflouric acid) actively and very vigorously seeks metals, and it
absorbs through the skin, whereupon it goes to bone (calcium is a "metal")
and causes EXTREMELY PAINFUL etching of the bone. 

BE VERY VERY CAREFUL WITH THIS ACID

David B.
W7DBH
Mobile-Only ...in NW Oregon