Rubber policeman

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Rubber policemen

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.[1] 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.

Further reading[edit]


  1. ^ Harris p.30
  • Harris, Daniel C. "Quantitative Chemical Analysis" (2007), 7th Ed. W.H Freeman and Company NY. ISBN 0-7167-7041-5