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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