Stability of IAPSO Standard Seawater


A check of the calibration of 10 batches of IAPSO Standard Seawater (P120-P129) against the defined KCl standard (Practical Salinity Scale 1978) showed differences of less than 0.001 in salinity (equivalent to ca.  0.00003 in K15) during storage periods of up to 96 weeks. An experimental batch stored in borosilicate bottles showed no significant difference from the seawater stored in glass ampoules over a storage period of 158 weeks.


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