Tennant Will Likely Appeal German Court Advertising Decision

  Tennant Will Likely Appeal German Court Advertising Decision

          Company Stands Behind Its Chemical-free ec-H2O™ Technology

Business Wire

MINNEAPOLIS -- June 17, 2013

Tennant Company (NYSE: TNC), a world leader in designing, manufacturing and
marketing solutions that help create a cleaner, safer, healthier world said
today that it will likely appeal a recent German court decision in Kärcher’s
lawsuit regarding advertisements of Tennant Company’s proprietary ec-H2O™
technology, a chemical-free cleaning solution based on the established science
of electrolysis.

“Although we have not seen the final written decision of the court we believe
it is, respectfully, based on incomplete and inaccurate information. The two
laboratory bench tests performed by the court appointed advisor had no or too
little correlation to cleaning with a scrubber-dryer using Tennant’s ec-H2O
chemical-free technology,” said Chris Killingstad, President and CEO of
Tennant Company.

Tennant Company continues to stand behind its advertisements of the ec-H2O
technology based on extensive internal and external tests and the experiences
of customers who have years of experience cleaning with ec-H2O, according to
Killingstad.

Tennant maintains that the two laboratory bench tests performed by the court
appointed advisor were seriously flawed. The first test had no applicability
to Tennant’s ec-H2O chemical-free technology as the test is typically used to
measure properties in traditional chemical cleaners. The second bench
test--even if properly performed--has little correlation to cleaning with a
scrubber-dryer, regardless of the cleaning solution, including ec-H2O.

In addition, the soil sample – comprised of 90% fat and 10% insoluble pigment
- could not be cleaned by a scrubber-dryer even if using a concentrated
degreasing agent. “A laboratory test or bench test in isolation of real-world
conditions cannot in and of itself accurately reflect the variability present
in a customer’s real-world environment,” Killingstad said.

Killingstad continued, “Tennant ec-H2O customers include many of the world’s
largest and most successful professional cleaning and facility service
providers. Real world operation remains the test that truly matters and our
customers are the true judges of performance.”

Tennant Company introduced its proprietary ec-H2O technology in 2008. ec-H2O
is based on the established science of electrolysis. The U.S. Patent office
has issued more than 800 patents for water electrolysis, several of which
belong to Tennant Company. With scientific testing done by five laboratories
on two continents, ec-H2O has been shown to clean better than tap water and as
well as a general purpose cleaner in many applications. ec-H2O customers
include many of the world’s largest and most successful professional cleaning
and facility service providers. As of the end of 2012, Tennant had more than
3,500 ec-H2O customers across the globe, 40,000 ec-H2O scrubbers in the
marketplace and $444 million (USD) cumulative ec-H2O sales. For more
information, please go to www.ec-h2ofacts.com.

Company Profile

Minneapolis-based Tennant Company (NYSE: TNC) is a world leader in designing,
manufacturing and marketing solutions that help create a cleaner, safer,
healthier world. Its products include equipment for maintaining surfaces in
industrial, commercial and outdoor environments; chemical-free and other
sustainable cleaning technologies; and coatings for protecting, repairing and
upgrading surfaces. Tennant's global field service network is the most
extensive in the industry. Tennant has manufacturing operations in
Minneapolis, Minn.; Holland, Mich.; Louisville, Ky.; Uden, The Netherlands;
the United Kingdom; São Paulo, Brazil; and Shanghai, China; and sells products
directly in 15 countries and through distributors in more than 80 countries.
For more information, visit www.tennantco.com.

Contact:

Tennant Company
INVESTOR CONTACT:
Tom Paulson, 763-540-1204
Vice President and Chief Financial Officer
or
MEDIA CONTACT:
Kathryn Lovik, 763-540-1212
Director, Communications