As a member of TC111 WG3, I feel I should issue a few words of caution here.
TC111 has not completed development of the standard for test
methods. It is currently a committee draft for voting, CDV
62321. The National Committees have until October to vote on the
draft. If it passes that vote, it will become a Final Draft
International Standard.
This standard is not approved! Therefore, it does not exist and does
not call for any particular test method for any given purpose.
Regarding the wording of the original query, if the daft standard is
approved as an IEC standard, it will not instruct the user to follow
an ISO or an EPA method. The draft standard contains informative
references to ISO and EPA standards, not normative references. The
distinction is important because the user must follow the procedures
in the IEC standard (if approved) and not the procedures in ISO or
EPA documents to be in compliance with the IEC standard.
Before anyone asks, I am not saying that other standards will be
disallowed once the IEC issues a standard. That is not for me to
say. In my opinion, only the regulators could issue such a
proclamation. To use another standard test method, you must ensure
that its scope covers your material and the concentration of the
analyte. Does the scope of EPA 3060A cover polymers explicitely?
John Sieber
NIST
At 08:04 AM 8/3/2006, you wrote:
>Mr. Balasubramanian,
>If that is all that there is that are "homogeneous materials that are
>mechanically separable", then yep, that's the list.
>
>I presume #3 is metallic, in which case only #1 could conceivably have
>Cr(VI) in it. If you check with XRF and there is no Cr at all, you're
>done. If there is more than 0.1%, then you have to use the chemical
>method to check for Cr(VI).
>Bev
>RIM
>
>-----Original Message-----
>From: Leadfree [mailto:[log in to unmask]] On Behalf Of Balasubramanian
>Krishnan
>Sent: August 3, 2006 3:04 AM
>To: [log in to unmask]
>Subject: [LF] Cr6 testing in cables which method is correct IEC TC111
>section 9 or section 10?
>
>Dear Experts,
> IEC TC111 section 9 describes ISO 3613:2000(E) as the method to be
>adopted for determining Cr6 on metallic samples. IEC TC111 section 10
>describes EPA 3060A & EPA 3060A as the method to be adopted for
>determining Cr6 on polymer materials and electronic compounds.
> For the USB cables which method is to be adapted for Cr6
>determination? I guess below are the homogenous parts for a cable or is
>there a big list of homogenous parts in a cable?
>1. The sheathing material used as insulation
>2. The conductor.
>3. The braid used for shielding.
>
>Sincerely
>
>K.Balasubramanian
>Project Leader - Hardware.
>
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