W. & R. Balston Ltd. Genuine Whatman Filter Paper, No. 1, c. 1955
Donated by Dr. Lin Tsai, Accession 01.0006.008
Dr. Christian Anfinsen went through a lot of Genuine Whatman Filter Paper, No. 1 during his career. There are different grades of filter paper; No. 1 was labelled, “For ordinary work, retaining medium sized particles. Qualitative or rough quantitative.” It’s used in paper chromatography, a method that Anfinsen performed in many of his experiments, in which chemical substances are separated based on how far they migrate on the specially prepared piece of filter paper. Paper chromatography was developed in England by R. Consden, A.H. Gordon, and Archer J.P. Martin in England in 1944, at the Wool Industries Research Association. Read their paper