[BBC-Micro] Reversing the Tube ULA (destructively)

Pete Turnbull pete at dunnington.plus.com
Thu Oct 28 23:49:02 BST 2010


Theo Markettos wrote:

> How conc was your conc nitric?  FWIW our lab's decapsulation used fuming
> 98% nitric acid:
> http://www.cl.cam.ac.uk/~mgk25/sc99-tamper.pdf

Of course; normal conc nitric is about 15M or 16M and is nothing like 
fuming nitric, which is somewhere between 21M and 24M depending on 
type/grade.  That was part of my point :-)  Mine is reagent grade so 
about 16M.  The water content makes a big difference to the corrosive power.

-- 
Pete						Peter Turnbull
						Network Manager
						University of York



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