Table 11. Mean analytical difference (delta TALK) between analyzed and certified TALK for CRM used during Indian Ocean CO₂ survey

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   Batch   Salinity   |    Certified values  |     MATS mean TALK       delta TALK
                      |                      |       (µmol/kg)         (MATS - CRM)
                      ------------------------
                      |    TCO2     TALK     |
                      | (µmol/kg) (µmol/kg)  |
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    23      33.483       1993.10    2212.7             2213.7                1.0
    24      33.264       1987.53    2215.5             2215.8                0.3
    26      33.258       1978.34    2176.6             2175.1               -1.5
    27      33.209       1988.10    2214.9             2214.3               -0.6
    29      33.701       1902.33    2184.8             2182.3               -2.5
    30      33.420       1988.78    2201.9             2200.5               -1.4
   Range     0.492         90.77      38                 40.7                3.5
   Mean                                                                     -0.8
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