@misc{indiciae94ba9b48f65c,
  title = {Simple ultrafiltration apparatus.},
  author = {W H Walker},
  year = {1967},
  doi = {10.1136/jcp.20.5.786},
  url = {https://pubmed.ncbi.nlm.nih.gov/5602992/},
  note = {Source identifier: 5602992}
}