A rubber policeman is a hand-held flexible natural-rubber scraper attached to a glass rod used in chemical laboratories to transfer residues of precipitate or solid on glass surfaces when performing gravimetric analysis. Rubber policemen also come in one-piece flexible plastic versions. They are not the same as rubber scrapers.
Rubber policemen are also used in biological labs, to transfer tissue culture cells from a plate to a suspension for e.g. splitting of cells or the preparation of cell lysates.
- Jensen, William B. (2008). "The Origin of the Rubber Policeman". Journal of Chemical Education 85: 776. Bibcode:2008JChEd..85..776J. doi:10.1021/ed085p776.
- Harris p.30
- Harris, Daniel C. "Quantitative Chemical Analysis" (2007), 7th Ed. W.H Freeman and Company NY. ISBN 0-7167-7041-5
|This chemistry-related article is a stub. You can help Wikipedia by expanding it.|