NMIJ Static and gravimetric method with flying start Weighing scale and stop Example 2 from CCM.FF-K4.1.2011: Summary of the experimental procedure employed at the different NMIs 3. Weighing* De-aerated Water** Density formula water? 20 L 100 mL CENAM DS DR IE + O No Tanaka et al DR O No Patterson & Morris NIST IPQ SS SS IE + O No Tanaka et al VSL DS DS DM+2D No Bettin & Spieweck SP DS SS IE Yes Bettin & Spieweck INRIM SS SS IE + 2D No Tanaka et al NIM ABA SS IE No Tanaka et al DR No ABA DI measured *Weighing: DS: Double substitution; DR: direct reading; SS: single substitution; ABA: substitution weighing IE: Ion exchange; O: Inverse osmosis; 1D: single distillation; 2D: double distillation, DM: demineralized Example 3 from CCM.FF-K6.2011: The conditions during measurements were described by all participants. The values are given in Table 4. Table 4. Temperature (°C) in participating laboratories during measurements Ukraine Chinese Japan France GP USA Mexico China NMI Taipei NMIJ/ NIST KRISS NIM CMS AIST Max 20.71 22.71 18.89 21.45 23.89 20.40 21.33 21.49 22.83 24.45 18.43 Min 19.84 21.42 18.76 21.30 23.13 19.80 18.67 20.26 22.26 23.91 17.65 Max-Min 0.88 1.29 0.13 0.16 0.76 0.60 2.66 1.23 0.57 0.54 0.78 Mean 20.19 21.77 18.82 21.38 23.66 20.16 20.07 20.89 22.63 24.14 18.15
NMIJ Static and gravimetric method with flying start and stop Weighing scale Example 2 from CCM.FF-K4.1.2011: 3. Summary of the experimental procedure employed at the different NMIs Weighing* Water** De-aerated water? Density formula 20 L 100 mL CENAM DS DR IE + O No Tanaka et al NIST DR O No Patterson & Morris IPQ SS SS IE + O No Tanaka et al VSL DS DS DM+2D No Bettin & Spieweck SP DS SS IE Yes Bettin & Spieweck INRIM SS SS IE + 2D No Tanaka et al NIM ABA SS IE No Tanaka et al ABA DR DI No measured *Weighing: DS: Double substitution; DR: direct reading; SS: single substitution; ABA: substitution weighing IE: Ion exchange; O: Inverse osmosis; 1D: single distillation; 2D: double distillation, DM: demineralized Example 3 from CCM.FF-K6.2011: The conditions during measurements were described by all participants. The values are given in Table 4. Table 4. Temperature (°C) in participating laboratories during measurements NMI Ukraine GP USA NIST Mexico KRISS China NIM Chinese Taipei CMS Japan NMIJ/ AIST France Max 20.71 22.71 18.89 21.45 23.89 20.40 21.33 21.49 22.83 24.45 18.43 Min 19.84 21.42 18.76 21.30 23.13 19.80 18.67 20.26 22.26 23.91 17.65 Max-Min 0.88 1.29 0.13 0.16 0.76 0.60 2.66 1.23 0.57 0.54 0.78 Mean 20.19 21.77 18.82 21.38 23.66 20.16 20.07 20.89 22.63 24.14 18.15
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