Inter-comparisons
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WCC-SF6
Inter-comparisons
Biennial inter-comparison with CCL-
WCC-SF6 has been conducting biennial inter-comparison activities with CCL since 2013 to confirm traceability and compatibility of laboratory and transfer standards maintained by WCC-SF6
against primary/secondary standard. WCC and CCL had four experiment in 2013, 2015, 2017 and 2019 with the same scale. Except the experiment in 2015, which was certified with one-point
calibration, WCC has been within the compatibility goal of ±0.05 ppt.
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