Whatman plc is a Cytiva brand specialising in laboratory filtration products and separation technologies. Whatman products cover a range of laboratory applications that require filtration, sample collection (cards and kits), blotting, lateral flow components and flow-through assays and other general laboratory accessories. Formerly Whatman plc, the company was originally acquired in 2008 by GE Healthcare, which became Cytiva in April 2020.

History

Founder's innovation and impact

The papermaker James Whatman the Elder (1702–1759) founded the Whatman papermaking enterprise in 1740 in

Maidstone Maidstone is the largest Town status in the United Kingdom, town in Kent, England, of which it is the county town. Maidstone is historically important and lies east-south-east of London. The River Medway runs through the centre of the town, l ...

Kent Kent is a Ceremonial counties of England, ceremonial county in South East England. It is bordered by Essex across the Thames Estuary to the north, the Strait of Dover to the south-east, East Sussex to the south-west, Surrey to the west, and Gr ...

, England. He made revolutionary advances to the craft in England and is credited as the inventor of wove paper (or Vélin), an innovation used for high-quality art and printing. His son, James Whatman the Younger (1741–1798), further developed the company's techniques. At a time when the craft was based in smaller

paper mill A paper mill is a factory devoted to making paper from vegetable fibres such as wood pulp, old rags, and other ingredients. Prior to the invention and adoption of the Fourdrinier machine and other types of paper machine that use an endless belt ...

s, Whatman innovations led to the large-scale and widespread industrialisation of paper manufacturing. John Baskerville (1707–1775), who needed paper that would take a light impression of the printing plate, approached Whatman; the resultant paper was used for the edition of

Virgil Publius Vergilius Maro (; 15 October 70 BC21 September 19 BC), usually called Virgil or Vergil ( ) in English, was an ancient Rome, ancient Roman poet of the Augustan literature (ancient Rome), Augustan period. He composed three of the most fa ...

's poetry, embellished with Baskerville's typography and designs. The earliest examples of wove paper, bearing his

watermark A watermark is an identifying image or pattern in paper that appears as various shades of lightness/darkness when viewed by transmitted light (or when viewed by reflected light, atop a dark background), caused by thickness or density variations i ...

, appeared after 1740. The Whatman

business Business is the practice of making one's living or making money by producing or Trade, buying and selling Product (business), products (such as goods and Service (economics), services). It is also "any activity or enterprise entered into for ...

is credited with the invention of the wove wire mesh used to mould and align pulp fibres. This is the principal method used in the mass production of most modern paper. The Whatmans held a part interest in the establishment at Turkey Mill, near Maidstone, after 1740; this was wholly acquired through the elder Whatman's marriage to Ann Harris. "Handmade" paper bearing the Whatman's mark continued in production for special editions and art books until 2002.

Acquisition

On 4 February 2008 GE Healthcare, a unit of

General Electric General Electric Company (GE) was an American Multinational corporation, multinational Conglomerate (company), conglomerate founded in 1892, incorporated in the New York (state), state of New York and headquartered in Boston. Over the year ...

, acquired Whatman plc at 270p per share in cash for each Whatman share, valuing Whatman at approximately £363 million (approximately $713 million.) Last production at Maidstone (Springfield Mill) occurred on 17 June 2014.

Key products and technologies

The Whatman product range covers * Laboratory filtration products: filter papers, membrane filters, syringe filters, syringeless filters, microbiology, microplates, and capsule filters * Sample collection cards and kits: FTA, FTA Elute, and 903 ranges * Blotting: blotting membranes, blotting papers, and equipment * Components for lateral flow and flow-through assays: membranes for immunoassays, conjugate release, blood separators, absorbents, and sample pads * General laboratory accessories: extraction thimbles, weighing papers, test and chromatography papers, lens-cleaning tissue, and Benchkote papers

References

{{DEFAULTSORT:Whatman Plc Paper products Filters 1740 establishments in England