"CDP - Old Records"

27 October, 1896. Result of analysis of a sample of "Cooper's Dip, Charlton Case" sent by W Cooper & Nephews. Analysis conducted by Dr Bernard Dyer, Analytical Laboratory, 17 Great Tower Street, London. Signed by Dyer. [1 sheet]

October, 1901. Analyses of Dip by Otto Hehner (Public Analyst), Sidney Williamson, Bernard Dyer, and Augustus Voelcker & Sons.

3 October, 1901. Sidney Williamson, "Report on the Composition of Cooper's Powder Dip". [8 sheets]

27 November, 1901. "Table showing Total Percentage of White Arsenic in Anhydrous Cooper's Powder Dip". Table compiled in 1901, providing results of samples from 1886-1901. With signature of James H Dolton. [3 sheets]

1901-1904. A series of laboratory reports on samples of Cooper's Dip (reports by Sidney Williamson, Chancery Lane, London).

17 August and 7 December, 1903. Two brief analytical comments by J Gibbs (Chemical Works, Berkhamsted).

1905-1906. Several analyses of Cooper's Dip (by The Cooper Research Laboratory).

1914-1922. Original Cooper's Dip wrapper (torn portion of), with note adhered recording the weight of the packet at different dates.

1913-1914. "Presence of Lumps in Powder Dip" - report with a brief comment attached: "These notes seem to call for attention" (1914, initialled "SRT" [S R Timson]). Also attached, a printed list of "Weights Of All Dip Packets" (William Cooper & Nephews, 12 December, 1913).

[c1914]. "Short Process for the Preparation of Cooper's Dipping Powder". Author not indicated. [19 sheets typescript, plus 2 sheets with photographs adhered]

[1914]. "Analysis of Arsenic Liquors". Author not indicated. [2 sheets]

1928. "Mr Hadaway's Records of Temperature etc at Lower Works. Originals to Mr D S A McDougall." [many manuscript sheets]

1896-1928

1 file

Copyright assigned to the Wellcome Trust