Brian O'Connell <[email protected]> wrote (in 
<[email protected]>) about 'RoHS 
testing', on Fri, 8 Jul 2005:
>My employer has had several customers request empirical proof, by 
>"spectrometer" tests that to indicate conformity to RoHS.

It's true that one should never underestimate human stupidity. As I 
understand it, he RoHS applies at component level (whether it should or 
not[1]), so you would have to provide such data for *every part*, not 
the product as a whole.

When confronted by an unreasonable demand, there are two things you can 
do:

1. Ask the customer how, on the basis of their experience of having the 
demand satisfied by others,  they think *you* should satisfy their 
demand. You may find that they accept a wholly inadequate solution.

2. Explain the difficulty of satisfying their demand and quote USD1 
million or so for doing so.
>
>Two stupid questions:
>
>1. How can surface emissions of an end-product provide a reliable 
>chemical analysis ? (I could understand that emissions from the surface 
>of a chassis could indicate that the coating has no "bad" stuff, but 
>not internal to the chassis)

It can't.
>
>2. What labs can perform this mystical/magical RoHS spectrometer test ?

I doubt that you need to know.

[1] As I understand it, a few micrograms of lead in one small component, 
exceeding the permitted limit, renders a complete product, may be 100 
kilogram, non-compliant. I don't understand why that should be, and I 
suspect that others are equally puzzled.
-- 
Regards, John Woodgate, OOO - Own Opinions Only.
Deadlines are 90% of deadliness.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk


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