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<B0101>
hi, for HF from rust remover, will impurities like Butyl Cellosolve and Nonyl Phenolethoxylate affect the chip in CMOS processes?
<Sync__>
yes
<Sync__>
anyting but metal free hf is bad
<B0101>
so organic impurities aren't as bad as metal contaminants?
<Sync__>
yes but you still want to get rid of anything organic
<Sync__>
metal contamination will ruin your lifetime
<Sync__>
which is your main enemy
<B0101>
how high are the chances of organic compounds bonding to the wafer?
<Sync__>
the problem more or less is that rust remover grad hf will not be metal free
<Sync__>
and if it is not metal free it is of no use at all
<B0101>
hmm, the MSDS and label's ingredients list shows no metallic compounds. So I'd have to test for metal compounds?
<Sync__>
metallic compounds are not what you are after
<Sync__>
trace amounts is what it is
<Sync__>
and I'd really wonder if you get trace metal grade HF over the counter
<B0101>
Over the counter? I wish...
<B0101>
more like over the black market counter...
<Sync__>
I guess it'd be easy enough to get hf imported from the us or something
<B0101>
well, for the lab I work in, yes, but for personal use? In my dreams
<Sync__>
just get someone in the us to send it to you
<B0101>
It'll get intercepted in customs check
<B0101>
Even chewing gum is banned here
<B0101>
and I'd be lucky if the package passes the X-ray machine check
<Sync__>
haha I'd move abroad
<B0101>
Though for now, I have an idea
<B0101>
Malaysia is connected to singapore by a bridge linking the 2 together
<B0101>
I noticed that if you're on a family trip (with old folks and even children in the car), they don't even check your belongings and let you through
<B0101>
maybe I can get a friend in Malaysia to send it to me on his next family trip
<B0101>
oops... maybe I should have encrypted my chat session
<B0101>
I don't know about the US but I highly suspect that every single phone call, internet search is intercepted by a live operator