Policeman-Pack of 5
Plastic policemen, comes in a pack of 5.
A policeman is a hand-held flexible natural-rubber or plastic scraper. It is used in laboratories to transfer residues of precipitate or solid on glass surfaces when performing gravimetric analysis. The origin of the policeman and its name cannot be identified for sure but some clues led back to the 19th century from the chemist named Carl Remigius Fresenius, who was known for his studies in analytical chemistry.