Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,536 pages of information and 233,962 images on early companies, their products and the people who designed and built them.

Permutit Co

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Water Softener.
April 1946.
December 1946.
February 1947.
October 1957.
November 1957.
March 1960.
November 1961.
February 1962.
November 1963.
January 1969.
September 1987.
June 1989.
November 1990.

of Permutit House, Gunnersbury Avenue, London, W4. Telephone: Chiswick 6431 (10 lines). Cables: "Permutit, Chisk, London"

of Pontyclun

1899 Company founded

1911 Water Softeners Ltd Incorporated - sole proprietors of Permutit base exchange medium.

1913 Private company United Water Softeners formed by merger of Water Softeners Ltd with Lassen and Hjort

1923 Company made public.

1937 Name changed to Permutit Co

1946 Water Softener made by Permutit Co. Shown at the Britain Can Make It exhibition. [1]

1947 British Industries Fair Advert for Ion exchange materials - "Zeo-Karb", "De-Acidite". For Recovery of Valuable Minerals, Removal of Impurities, Catalysts, Separation of Poly-Valent Ions from Non-Valent Ions - Demineralisation of Water. (Chemicals etc. Section). [2]

1961 Manufacturers of water-treatment equipment. 839 employees. [3]

1970 Acquired by Portals[4]

See Also


Sources of Information

  1. [1] vads: Design Archives - University of Brighton
  2. 1947 British Industries Fair Advert 273; and p216
  3. 1961 Dun and Bradstreet KBE
  4. The Times, Apr 28, 1970