Rethinking | Power | Paint Makers | Ship Owners | Performance | Approval | Safety Data



Selektope introduces for the first time ever a pharmacological mode of action to combat barnacle settlement. By temporarily stimulating the octopamine receptor in the barnacle larvae, causing their legs to start kicking, the organisms are repelled from the hull. These groundbreaking discoveries enable unrivalled power at minute concentrations, yet within the limits of the most rigorous risk assessment bodies in the industry. Selektope is an organic, non-metal compound with efficacy proven at 0.1% w/w.


The ship­ping indus­try spends over USD 200 bil­lion on fuel each year, rep­re­sent­ing the lion part of oper­a­tional costs for the ship­ping com­mu­ni­ty. Enhanced reg­u­la­tion on emis­sions to air will fur­ther increase fuel costs, as high­er fuel grades will be required.
Selek­tope is an approved selec­tive antifoul­ing agent that pro­tects ship hulls from bar­na­cles and the drag they cause, which can lead to sig­nif­i­cant fuel sav­ings of more than 10 per­cent.

Selek­tope deliv­ers pow­er at only a few grams per liter paint, leav­ing room for inno­va­tion at a paint mak­er lev­el and opti­miz­ing hull per­for­mance while sharply reduc­ing bio­cide load­ings.



  • Improves sta­t­ic per­for­mance across the range of antifoul­ing tech­nolo­gies
  • Com­pli­ant with reg­u­la­to­ry author­i­ties for com­mer­cial ves­sels and leisure boats
  • Enables reduced bio­cide load­ings
  • Improved for­mu­la­tion flex­i­bil­i­ty
  • Pow­er­ful enough to replace cop­per, flex­i­ble enough to boost Cu-based for­mu­la­tions



  • Reduced foul­ing and improved fuel sav­ing
  • Extend­ed sta­t­ic per­for­mance
  • Reduced need for hard scrub­bing through excel­lent per­for­mance again­st bar­na­cle induced foul­ing
  • Reduced risk of trans­port­ing inva­sive aquat­ic species
  • Improved envi­ron­men­tal pro­file by reduc­ing bio­cide load­ings in antifoul­ing for­mu­la­tions


The hull of a vessel can become heavily fouled with both macro and micro fouling, causing significantly increased fuel consumption when moving. Tests show that using powerful Selektope containing antifouling pro­ducts greatly reduces fouling, potentially saving 30-40% on fuel costs, while owners operating in aggressive waters and with an unpredictable idling scheme can avoid fuel penalties of more than USD 100,000/year for small vessels and over USD 1M/year for large vessels.

Comparative results after 7 months in static conditions on the west coast of Sweden.






Biofouling | Impact | Invasive Species | Fouling Pressure


The vari­ety among bio­foul­ing organ­isms is high­ly diverse and extends far beyond attach­ment of bar­na­cles and sea­weeds. Accord­ing to some esti­mates, over 1,700 species com­pris­ing over 4,000 organ­isms are respon­si­ble for bio­foul­ing which occurs in all oceans around the globe. Bio­foul­ing is divid­ed into micro foul­ing — biofilm for­ma­tion and bac­te­ri­al adhe­sion, and macro foul­ing — attach­ment of larg­er organ­isms.


Bio­foul­ing has a large impact on fuel con­sump­tion as it has been demon­strat­ed that bar­na­cle foul­ing increase fric­tion­al drag by up to 80%. Despite major con­tin­ued devel­op­ment of more effi­cient coat­ing sys­tems there is still room for improve­ment to cut anoth­er 10% of the indus­tries total fuel con­sump­tion amount­ing to some 350 mil­lion tons of fuel per year. Selek­tope is brought to mar­ket to main­tain smooth, clean hulls achiev­ing ener­gy effi­cien­cy and reduc­ing oper­a­tional and envi­ron­men­tal costs.


Fouled hulls are further known to act as vehicles of transportation for invasive aquatic species, which have proven to have negative effects on marine eco-systems. The issue is being adressed regionally and through IMO, resulting in possible hull inspections prior to making port calls.


Although marine biofouling occurs in all oceans, the fouling risk is different in different areas. In general, tropical or sub-tropical waters are considered high risk areas with rapid growth and settlement of organisms. With average global water temperatures increasing, high risk fouling is expanding, covering larger areas. Idling in these regions is therefore associated with large penalties as regards fuel consumption and maintenance costs.


Lena Lindblad | Laurin Maritime | Marinvest | Swedish Sea Rescue Society

Lena Lindblad

I-Tech co-founder and R&D Director Lena Lindblad spoke at the Swedish Shipowners’ Association’s Entrepreneur Day about how the introduction of a pharmacological mode of action to combat barnacle settlement has proven to be both economically and environmentally effective in fighting antifouling.


Laurin Maritime

Mikael Karlsson talks about why Laurin Maritime, after trying the Selektope test panels, is the first shipping company to do a full hull painting with Selektope as the active antifouling agent.



Fredrik Stubner, Marinvest, talks about the importance of keeping the hulls on the company’s vessels clean, and how Selektope test panels have shown promising results.


Swedish Sea Rescue Society

Saving lives without any government funding. In case of alarm, the Swedish Sea Rescue Societys volunteers are set to depart within 15 minutes, at any time, in any weather - 24 hours a day. Watch the film to find out how Selektope helps them save money, but more importantly time, every day.



I-Tech | Business Idea | Vision | Investors | Supporters


I-Tech is a Gothen­burg based com­pa­ny with glob­al reach, hold­ing all IP and reg­u­la­to­ry rights to its all new antifoul­ing agent Selek­tope (gener­ic name, Medeto­midine). Rely­ing on aca­d­e­mic research in Gothen­burg, I-Tech has since 2006 suc­cess­ful­ly trans­formed the sci­en­tific inven­tion into a com­mer­cial­ly ready and avail­able antifoul­ing agent. I-Tech has had sev­er­al list­ings as top start-up com­pa­ny and is now an entire­ly com­mer­cial­ly dri­ven com­pa­ny with con­tin­u­ous rev­enue streams.
Read more about our team
Read more about the board


I-Tech’s busi­ness con­cept is to offer Selek­tope to the glob­al paint indus­try as the prin­ci­pal active agent in marine antifoul­ing paints. The com­pa­ny is high­ly com­mit­ted to serv­ing its cus­tomers in the best way pos­si­ble, and is always ready to sup­port its cus­tomers, from reg­u­la­tor sup­port and advice to indus­tri­al inte­gra­tion and han­dling of Selek­tope. The com­pa­ny will also con­tin­u­ous­ly seek and defend the nec­es­sary patents in order to use Selek­tope as a sub­stance again­st marine bio­foul­ing on a glob­al basis.


The company’s vision is to become the pre­ferred sup­pli­er to the pro­fes­sion­al and non-pro­fes­sion­al antifoul­ing mar­ket. The company’s mis­sion is to bring new dimen­sions to the glob­al antifoul­ing indus­try.


The Swedish Energy Association
The European Innovation Initiative
Bioventure hub




Stefan Sedersten

Stefan Sedersten


Ste­fan holds a M.Sc. in Mechan­i­cal Engi­neer­ing from Chalmers uni­ver­si­ty of tech­nol­o­gy in Gothen­burg. He works as man­age­ment con­sul­tant and senior advi­sor. Ste­fan has a back­ground from radar elec­tron­ics and marine propul­sion indus­try and has held var­i­ous man­age­ri­al posi­tions in pur­chas­ing, pro­duc­tion and R&D. Ste­fan was the COO and the vice CEO at Berg Propul­sion group, a lead­ing sup­pli­er of marine pro­peller sys­tems for the indus­tri­al and mer­chant ship­ping indus­try until 2013 when the com­pa­ny was acquired by Cater­pil­lar Inc.

Bertil Arvidsson

Bertil Arvidsson

Board mem­ber

Bertil holds an M.Sc. in engi­neer­ing.

Mats Enegren

Mats Enegren

Board mem­ber

Mikael Laurin

Mikael Laurin

Board mem­ber

Mikael has a wide range of expe­ri­ence from many indus­tries, coun­tries and dis­ci­plines. He has worked for dif­fer­ent con­sul­tan­cy firms, with focus on sup­ply chain man­age­ment, busi­ness strat­e­gy and man­age­ment. He co-found­ed a con­sul­tan­cy firm in 2002, with focus on busi­ness and mar­ket­ing strat­e­gy for the com­mu­ni­ca­tions and media indus­try. Since 2007 he has been CEO of Lau­r­in Mar­itime. Lau­r­in Mar­itime oper­ates a mod­ern fleet of tankers for oil prod­ucts and chem­i­cals world­wide.

Leif Darner

Leif Darner

Board mem­ber

Leif is the own­er of Darn­er Asset Man­age­ment AB, a con­sult­ing firm. Addi­tion­al­ly he is  the Chair­man of the Board of Vicore Phar­ma Hold­ing AB and Board Mem­ber of LKAB AB, Swe­den, Flowserve Cor­po­ra­tion, Dal­las, US. Pri­or to this, he was an Exec­u­tive Direc­tor on the Board of Man­age­ment at AkzoNo­bel, respon­si­ble for Per­for­mance Coat­ings from 2008 and for Chem­i­cals from 2004. Before this, he was Man­ag­ing Direc­tor BU Marine & Pro­tec­tive Coat­ings. Until 1999 he held var­i­ous posi­tions such as Chief Exec­u­tive North­ern Europe and Chief Exec­u­tive Pro­tec­tive Coat­ings Europe at Cour­taulds plc, UK. Pri­or to this , he was Man­ag­ing Direc­tor for Inter­na­tion­al Färg AB, Swe­den


Press | Articles


» Selektope®-powered antifouling range increases with new product launch
Read the press release
  » Stena RoRo selects Selektope® for extensive newbuild program
Read the press release
» Selektope® shortlisted for GREEN4SEA Technology Award
Read the press release
  » I-Tech expands team with senior appoint­ment
Read the press release

See all press releases


» Marine active agent spawns changes in the field of marine paint
Read the article
  » Successful ship trial results for barnacle-repellent active agent (Ship & Offshore magazine)
Read the article
» Selektope® Agent Successfully Tested
Read the article
  » Successful Ship Trials of Selektope® Active Agent Create Change in the Paint Sector
Read the article

See all articles


Selek­tope is devel­oped, man­u­fac­tured and mar­ket­ed by I-Tech AB, a Swedish lim­it­ed com­pa­ny found­ed in 2000 by a group of researchers from Chalmers Uni­ver­si­ty of Tech­nol­o­gy and the Uni­ver­si­ty of Gothen­burg.

Oliver Weigenand

Oliver Weigenand

Oliv­er holds a PhD from Göt­tin­gen Uni­ver­si­ty in Ger­many and an engi­neer­ing degree from the Uni­ver­si­ty of Sus­tain­able Devel­op­ment HNEE in Ger­many. Oliv­er has an impres­sive track record from his eight years at LANXESS AG and has suc­cess­ful­ly held posi­tions as Glob­al Pro­duct Man­ager (includ­ing marine bio­cides). Oliv­er has also served as Pres­i­dent and CEO of an SME with­in the LANXESS Corp. Oliv­er recent­ly served as Vice Pres­i­dent North and Cen­tral Amer­i­ca at LANXESS Cor­po­ra­tion.

Philip Chaabane

Philip Chaabane

Philip holds an MSc in Mate­ri­al Sci­ence Engi­neer­ing from both Luleå Uni­ver­si­ty of Tech­nol­o­gy and EEIGM, France. He has exten­sive expe­ri­ence from lead­ing posi­tions with­in busi­ness as well as oper­a­tional activ­i­ties in R&D and pro­duc­tion in high tech and inter­na­tion­al envi­ron­ments. Pri­or to work­ing at I-Tech, Philip was the Busi­ness Devel­op­ment Director/Engineering Man­ager at Pow­er­Cell. He has also held var­i­ous oper­a­tional respon­si­bil­i­ties with­in the Volvo Aero Cor­po­ra­tion.

Lena Lindblad

Lena Lindblad

R & D Direc­tor
Lena is one of the founders of I-Tech AB. She was an ini­tia­tor of the research project Marine Paint as well as one of the inven­tors and patent hold­ers of the Selek­tope® con­cept. Lena holds a PhD in Phar­ma­col­o­gy and is an Asso­ciate Pro­fes­sor at the Fac­ul­ty of Sci­ence at the Uni­ver­si­ty of Gothen­burg.

Cecilia Ohlauson

Cecilia Ohlauson

Head of Reg­u­la­to­ry Affairs
Cecilia’s aca­d­e­mic back­ground is in eco­tox­i­col­o­gy of bio­cides and she holds a PhD in Envi­ron­men­tal Sci­ence. Cecil­ia has been work­ing with reg­u­la­to­ry affairs since 2008 at I-Tech and pri­or to that she was in the phar­ma­ceu­ti­cal indus­try where she worked with qual­i­ty issues.

Dan Isaksson

Dan Isaksson

R & D Chemist
Dan has a PhD in Organ­ic Chem­istry and joined I-Tech after a two-year post doc­tor­ate in the Marine Paint project at Chalmers Uni­ver­si­ty of Technology/University of Gothen­burg.

Nina Carlén

Nina Carlén

Mar­ket­ing and Admin­is­tra­tion.

Nina divides her time between I-Tech and Mintage Sci­en­tific (own­er com­pa­ny of I-Tech). She has worked for I-Tech since 2009 and pri­or to that with­in mar­ket­ing for Ini­tios Med­ical AB and Astra Tech AB.

Catherine Austin

Catherine Austin

Direc­tor Mar­ket­ing & Com­mu­ni­ca­tions
Cather­ine holds an MRes in Envi­ron­men­tal Man­age­ment and a BSc in Zool­o­gy from Swansea Uni­ver­si­ty in the Unit­ed King­dom. She has worked in the inter­na­tion­al ship­ping sec­tor for six years dur­ing which has gained exten­sive expe­ri­ence through high-lev­el man­age­ment roles. Pri­or to work­ing at I-Tech, Cather­ine was the Exec­u­tive Direc­tor of Fath­om Mar­itime Intel­li­gence. She is also a well-reput­ed tech­ni­cal writer and jour­nal­ist.



If you would like to receive test samples or more details about Selektope, please describe your interest, ideas or visions in an email and we will contact you for further discussions.
For more information on how the innovation around Selektope can improve your business, please contact us at: or call +46 31 788 05 60.

I-Tech AB
c/o Astra Zeneca AB
Pepparedsleden 1
SE- 431 83 Mölndal