@misc{1163106,
  author = {Richard A Durst},
  title = {Standard Reference Materials ::Standardization of pH measurements/},
  year = {1975},
  month = {1975-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.SP.260-53},
  language = {en},
}