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April 2009

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Subject:
Re: REACH and DMF limits
From:
"Marcus L. Thompson" <[log in to unmask]>
Reply To:
(Leadfree Electronics Assembly Forum)
Date:
Wed, 29 Apr 2009 12:22:10 -0700
Content-Type:
text/plain
Parts/Attachments:
text/plain (424 lines) 
I can see that we've been hand-soldering with the new fluxes again --

Yet one more reason why RoHS is necessary :oO


--- Previous Message in This Thread ---
Subject: Re:[LF] REACH and DMF limits
From: Stadem, Richard D. <[log in to unmask]>
To: [log in to unmask]
Date: Wednesday, April 29, 2009 11:10:04 AM

> Mersey Docks And Harbour Board,  and little lambs eat ivy.
> 
> -----Original Message-----
> From: Leadfree [mailto:[log in to unmask]] On Behalf Of Chris Ball
> Sent: Wednesday, April 29, 2009 12:47 PM
> To: [log in to unmask]
> Subject: Re: [LF] REACH and DMF limits
> 
> If it was Friday I would say...
> 
> Posidotes and mahzy doats 'cause Wilfred Brimley's chiding. My LDLs
> hiding
> too, how 'bout you?
> 
> -Chris
> 
> 
> 
>  
> 
>              Werner Engelmaier
> 
>              /*
> 
>              <[log in to unmask]
> To 
>              OM>                       [log in to unmask]
> 
>              Sent by: Leadfree
> cc 
>              <[log in to unmask]
> 
>              >
> Subject 
>                                        Re: [LF] REACH and DMF limits
> 
>  
> 
>              04/29/2009 01:14
> 
>              PM
> 
>  
> 
>  
> 
>              Please respond to
> 
>                 "(Leadfree
> 
>                 Electronics
> 
>              Assembly Forum)"
> 
>              <[log in to unmask]
> 
>              >; Please respond
> 
>                     to
> 
>              [log in to unmask]
> 
>                      M
> 
>  
> 
>  
> 
>  
> 
> 
> 
> 
> 
>  Is it Friday yet in the U.S.?
> Who handles posidotes?
> Werner
> 
> 
> 
> 
> 
> 
> 
> -----Original Message-----
> From: Whittaker, Dewey (EHCOE) <[log in to unmask]>
> To: [log in to unmask]
> Sent: Wed, 29 Apr 2009 12:31 pm
> Subject: Re: [LF] REACH and DMF limits
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> I'm sorry, I handle anecdotes. Chris and Bev handle antidotes.
> Dewey
> 
> -----Original Message-----
> From: Scott Xe [mailto:[log in to unmask]]
> Sent: Wednesday, April 29, 2009 9:24 AM
> To: '(Leadfree Electronics Assembly Forum)'; Whittaker, Dewey (EHCOE)
> Subject: RE: [LF] REACH and DMF limits
> 
> Dewey,
> 
> As an electronics engineer, I am unsure the actual differences between
> these
> two limits.  Are they the same and just expressed differently by intent?
> Could you please shed light on it to me.
> 
> Thanks,
> 
> Scott
> 
> -----Original Message-----
> From: Leadfree [mailto:[log in to unmask]] On Behalf Of Whittaker, Dewey
> (EHCOE)
> Sent: Wednesday, April 29, 2009 11:07 PM
> To: [log in to unmask]
> Subject: Re: [LF] REACH and DMF limits
> 
> Watch it James you're reaching into my field now.
> Dewey
> 
> -----Original Message-----
> From: Leadfree [mailto:[log in to unmask]] On Behalf Of James, Chris
> Sent: Wednesday, April 29, 2009 8:02 AM
> To: [log in to unmask]
> Subject: Re: [LF] REACH and DMF limits
> 
> You missed the point - Scott was talking about the units of measure not
> the actual figures.
> 
> A w/w measurement unit is not a technically correct unit to use in the
> DMF directive, because as you say the substance is normally "holstered"
> in the item.
> 
> 
> -----Original Message-----
> From: Leadfree [mailto:[log in to unmask]] On Behalf Of Bev Christian
> Sent: 29 April 2009 15:53
> To: [log in to unmask]
> Subject: Re: [LF] REACH and DMF limits
> 
> James,
> If you are talking about a 0.1% w/w then that would be 0.001 kg/kg or 1
> g/kg or 1000 mg/kg.  This is certainly much bigger than 0.1 mg/kg. And
> for DMF they are looking for this in holsters (both real leather and
> fake leather), so it is almost the entire weight of the article, so I
> don't see what you are really getting at.
> Bev
> RIM
> 
> -----Original Message-----
> From: Leadfree [mailto:[log in to unmask]] On Behalf Of James, Chris
> Sent: Wednesday, April 29, 2009 10:48 AM
> To: [log in to unmask]
> Subject: Re: [LF] REACH and DMF limits
> 
> w/w (or w/v, v/v )is us
> With respect that's an imprecise answer;
> 
> w/w (or w/v, v/v )is used where you are considering the % presence in a
> compound or substance.
> 
> In the DMF this isn't (in the majority case) the case so can't class as
> a w/w measurement.
> 
> 
> 
> -----Original Message-----
> From: Leadfree [mailto:[log in to unmask]] On Behalf Of Bev Christian
> Sent: 29 April 2009 14:57
> To: [log in to unmask]
> Subject: Re: [LF] REACH and DMF limits
> 
> Because they are more concerend about DMF.
> Bev
> RIM
> 
> -----Original Message-----
> From: Leadfree [mailto:[log in to unmask]] On Behalf Of Scott Xe
> Sent: Wednesday, April 29, 2009 9:54 AM
> To: [log in to unmask]
> Subject: [LF] REACH and DMF limits
> 
> The limit of 0.1% w/w is used in REACH regulation while 0.1 mg/kg of the
> weight of the product or part of the product used in DMF directive.
> They all are of chemical requirements and DMF may eventually fall into
> Restricted substances of REACH regulation.  Why do they use different
> unit?
> 
> Thanks and regards,
> 
> Scott
> 
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