Söll GmbH is a German water-treatment specialist founded in 1994 by chemist Thomas Willuweit in Hof, Bavaria. The company develops and produces environmentally friendly products for garden ponds, aquariums, swimming pools, and related water applications. [1]
Design and History
The company’s current visual identity is built around a green signet that appears on many Söll products. The company itself describes this mark as expressing its commitment to solving pond-maintenance problems “starting at the roots,” in keeping with its motto “We make water better.” [2]
An earlier wordmark, registered as a trademark, consisted of the word “SOLL” in stylized form with the letter “O” rendered as a representation of a flask, a reference to the company’s chemical and laboratory heritage. [3] A separate figurative trademark for “SÖll” was filed with the European Union Intellectual Property Office in February 2018. [4]
Brand asset listings for Söll GmbH show a color palette that includes a deep blue (hex #001FA0), a lighter blue, and a lime green, though these listings are not official company sources and should be treated as indicative rather than authoritative. [5]
Meaning and Symbolism
The green signet used on Söll products is tied directly to the company’s environmental positioning. Söll states that its principles of ecological water treatment are “expressed by the green signet” found across its product range. [2] The flask-shaped “O” in the earlier SOLL wordmark similarly referenced the company’s origins in chemistry, founded on the patented invention CarbonAdd by graduate chemist Thomas Willuweit. [6]
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