We are solving the environmental challenges caused by the constantly improving global lifestyle.

See our solutions

Friends of The Environment

1 years of experience in the filtration industry
2499980 large vehicles retrofitted with our Diesel Particulate Filters
280 water treatment systems installed worldwide

What We Do to Improve Our Future

Over two decades ago, LiqTech was founded out of the need for new technologies to meet the ever-increasing demands for cleaner air and water. Although time has passed, the goal has not changed. We are still here to take an active role in reducing world pollution.

Today, LiqTech is a clean technology company that provides state-of-the-art gas and liquid purification products by manufacturing ceramic silicon carbide membranes and systems for liquid and gas filtration. For the last 20 years, we have been at the leading edge in developing, producing, and marketing its proprietary products to combat environmental challenges. We are a Nasdaq-listed company consisting of three business units. 

Specialized in developing and manufacturing unique and patented ceramic silicon carbide filters and membranes, LiqTech Ceramics has made high-value, high-performance products for liquid and gas filtration for more than two decades. We specialize in two business areas: ceramic membranes for liquid filtration systems and diesel particulate filters (DPFs) to control soot exhaust particles from diesel engines.

At LiqTech Water, we are specialists in water treatment technologies and provide end-to-end service with complete in-house engineering capabilities. We are a leading international player in removing suspended solids, oil and grease, pathogens, and heavy metals from water. By integrating unique ceramic membranes into innovative water treatment systems for various industries, we can provide sustainable operation for your requirements. 

LiqTech Plastics provides highly flexible and innovative plastics manufacturing, focusing on machining, welding, bending, and solvent cementing. With an intense focus on customer demands, our vision is to be the market’s most flexible supplier of plastic solutions for your operation. We have more than 60 years of experience in the plastic industry and have some of the most talented people in the field ready to guide you for the best sustainable solution.

We will help you make growth sustainable — both in relation to profits and the environment.

Learn more about LiqTech

Improving our future

We believe it is our responsibility as a company and as a people to take strides in reducing global pollution.

Sune Mathiesen

Sune Mathiesen

Group CEO, LiqTech


Data as of May 16, 2022 12:00 AM EST

View LiqTech on Nasdaq

LiqTech is listed on Nasdaq

LiqTech was born from a vision that technology companies with the right products and management could deliver sustainable profits and growth.

In our Investor Relations section, you can find quarterly filings, earnings press releases, conference call transcripts and proxy statements for LiqTech International, Inc.

LiqTech is listed on Nasdaq with symbol: LIQT.

Go To Investor Relations

Upcoming Events

May 2022

  • 30 Mon

    IFAT 2022

    IFAT, Munich, Germany 08:00 AM CET local time02:00 AM ET in New York

    Come and visit us at IFAT 2022 in Germany.

June 2022

  • 6 Mon

    Posidonia 2022

    Posidonia, Athens, Greece 08:00 AM CET local time02:00 AM ET in New York

    Come and visit us at Posidonia 2022 in Greece.

August 2022

  • 29 Mon

    ONS 2022

    ONS, Stavanger, Norway 08:00 AM CET local time02:00 AM ET in New York

    Come and visit us at ONS 2022 in Stavanger, Norway.

View all events

Quality Management Team

Putting the SDGs into Practice with ISO 9001

We are ISO 9001 certified!

On top of having a superior Quality Management System and Leadership, this is a useful tool to make us rise to the challenge of contributing to an improved future. This certificate enhances our ability to develop, manufacture, and deliver products and services that comply with customer demands as well as regulatory and legal requirements.

For each of the 17 SDGs, ISO has identified the standards that contribute to the most significant impact. At LiqTech, we contribute with consensus, collaboration, and innovation of unique filtration technologies to purify liquids and gases to combat a future without clean water and healthy environments.

See LiqTech ISO 9001 Certificate