Ocean Science
Ocean Science
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Articles | Volume 17, issue 3
Articles | Volume 17, issue 3
https://doi.org/10.5194/os-17-819-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-17-819-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 3
Technical note
 | 
30 Jun 2021
Technical note |  | 30 Jun 2021

Technical note: Stability of tris pH buffer in artificial seawater stored in bags

Wiley H. Wolfe, Kenisha M. Shipley, Philip J. Bresnahan, Yuichiro Takeshita, Taylor Wirth, and Todd R. Martz

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Short summary
We tested the stability of a well-characterized seawater pH buffer, tris, during long-term storage in gas-impermeable bags. Tris is used to validate pH measurements; it is critical that we understand how its chemistry changes over time. Correspondingly, we prepared multiple batches of tris buffer in artificial seawater, stored the buffer in multiple types of gas impermeable bags, and analyzed its pH over the course of 300 d, discovering an average change of −0.006 yr−1.
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