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关于UL的WTDP，不同的UL标准，或同一标准中不同类别的产品都需要先进行实验室审核；一般WTDP实验室审核需要在做WTDP之前完成，特殊情况可以和WTDP同时进行。
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某个UL标准通过WTDP审核之后，并不是每年进行审核，而是在每次WTDP的时候都需要对实验室的如下内容进行的审核：
& M; ^$ z% f9 S1. Environment:
4 W7 m7 t; ~# }! c2 qAccommodations and Environmental conditions, including proper power source meet the requirements of the test standard or UL default criteria (ISO/IEC 17025 Clause 5.3.1, 5.3.2. 5.3.3)& ]7 [" _* a C+ q, I
4 E E0 u# W" O6 n2. Equipment:
# ^8 o: }: Z1 D0 y& J6 pTesting is being conducted within the test equipment calibration dates. (See Test Instrument Information Page and ISO/IEC 17025 5.6.2.2)
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3. Critical Consumables:& I, a) |+ [% a6 X
Critical consumables are compliant with test standard requirements. (ISO/IEC 17025 Clause 4.6)& D. s0 L8 G! n1 @ [
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4. Sample Identification:4 t5 {( [1 \, U9 I! f& c
Identification of items to be tested has been made (e.g. model no., Serial No., etc.) (See Test Sample Identification page and ISO/IEC 17025 Clause 5.8.2). K1 q+ G j. D* R8 J+ n$ H! h
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最后得出如下结论：
! L& I3 }& H) [: \% h* zSummary:9 x. ^' f. }3 T8 q# j% x
The test facility was or was not deemed to have the environment and capabilities necessary to perform the tests included in this data package. |
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