CRM production procedure

For details, please refer to Ota et al., 2010.[1]

[1] Ota, H., H. Mitsuda, M. Kimura, T. Kitao, Reference Materials for Nutrients in Seawater: Their Development and Present Homogeneity and Stability. In: Comparability of nutrients in the world's ocean, (Eds.) M. Aoyama, A.G. Dickson, D.J. Hydes, A. Murata, J.R. Oh, P. Roose and E.M.S. Woodward, Tsukuba, JAPAN: MOTHER TANK, 2010. pp.11-30, ISBN978-4-9904863-0-3