@misc{245566,
  author = {Regina Easley and Jason Waters and William Guthrie},
  title = {Certification of Standard Reference Material® 2193b Calcium Carbonate [used as saturated Ca(OH)2 solution]},
  year = {2019},
  month = {2019-05-16},
  publisher = {Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.SP.260-197},
  language = {en},
}