@misc{indiciae4db2d27f09de,
  title = {An inexpensive apparatus for making precise, continuous, complex gradients for column chromatography.},
  author = {J Weeke and H Orskov and H J Gundersen},
  year = {1972},
  url = {https://pubmed.ncbi.nlm.nih.gov/4634504/},
  note = {Source identifier: 4634504}
}