“Smart Leuco­Indigo”: Electricity Instead Of Chemicals

3-dimensional carbon electrode technology
Machine specification
• Dimensions approx.: 12 × 5.5 × 4.0 m (l × w × h)
• Capacity: 1 ton Smart-Indigo™ (30%) per day Transformation of approx. 100 tons of indigo powder (grain) per year
• Electricity consumption Approx. 650 KWh to produce 1 ton Smart-Indigo™ (30%)

Electricity Instead Of Chemicals

Smart leuco-indigo production on-site

“Smart Leuco-Indigo” is produced by electrochemical process consuming considerably fewer resources than existing methods. Using only indigo pigment, caustic soda, water and electricity. In a fully automated process, the clean Leuco-Indigo is produced, metered and fed directly to the dye bath. The Smart-Indigo™ solution is the most sustainable way to dye denim.


  • Chemicals
  • Environmental burdens
  • Health hazards
  • Long transportation ways


  • Indigo pigment
  • Water
  • Caustic soda
  • Electricity

Discharging only

  • Oxygen

Key Advantages:

  • Massively reduced pollution; Healthier and safer work places; Favorable production.
  • Smart Indigo process is, therefore, good for the planet, people and profit.
Smart-Indigo™ revolutionizes the dyeing process for denim. It opens up the industrial production of Leuco-Indigo on the basis of electrochemical reduction for the first time. This environmentally friendly process was evolved in Switzerland and developed technologically to marketability. A Global Innovation! The smarter way to indigo is trend setting for the whole denims industry.

Savio Group

Sedo Engineering is part of the Savio Group. Cutting-edge technology and excellent solutions for the textile industry in spinning, weaving and dyeing/finishing.

  • 5 Business areas
  • 11 Facilities worldwide
  • 221 agents in 102 countries
  • 1495 employees worldwide

Sedo Engineering SA

Being experienced specialists in the dyeing industry, we guarantee Swiss quality standards and highest reliability. Industrial enterprises utilising our groundbreaking and proven technology will be at the forefront of denim dyeing industry. On top of that, you will protect the environment and create a safer workplace. Because it makes a difference!

Sedo Engineering SA
Rue du Village 7, 1908 Riddes VS, Switzerland
+41 27 306 80 80 [email protected] www.smartindigo.com

Around the world a growing movement of people are using their creativity, design skills and purchasing power to demand fashion without pollution. United by a shared belief that the clothes we wear should carry a story we can be proud of, activists, bloggers, designers, scientists and models have been able to convince big brands including Zara, Mango, Valentino, UNIQLO and H&M to commit to toxic-free fashion. There is still a long way to go, but our successes so far prove that when we work together, big brands are forced to stand up and deliver.