SANI Membranes ApS will implement and spread micro and ultrafiltration  filtration solutions based on the Free Flow Plate™ technology and the Vibro™ technology, ensuring a cleaner and improved separation - using less resources. 

SANI Membranes ApS is a product and business development company within sanitary membrane solutions, selling through committed system builders, distributors and OEM's.


SANI Membranes ApS is a Danish cleantech company focused on developing and commercializing the innovative Free Flow Plate™ technology and the disruptive Vibro™ technology for cleaner, more energy efficient, more effective and lower fouling filtration solutions for the future.

SANI Membranes ApS is proudly privately owned by the founder and Johs. Tandrup A/S.



  • SANI Membranes ApS was founded by Henrik Hjelmsmark in Værløse, Denmark.
  • The Proof of Concept of the Hollow Plate™ technology was initiated and the first prototypes developed. 


  • The Hollow Plate™ technology was developed further.
  • Seed funding raised from Syddansk Teknologisk Innovation A/S.
  • The first lab scale tests were performed on prototypes.
  • SANI Membranes Aps moved to larger facilities in Farum, Denmark.


  • The Proof of Concept of the Hollow Plate™ technology were finalized.
  • Production equipment was conceptualized from prototypes.
  • The first customer pilot tests were performed with Arla and Novozymes.


  • Syddansk Teknologisk Innovation was bought out by Johs. Tandrup A/S who brings expertise in plastic production and assembly, as well as in marketing and management support.
  • SANI Membranes moved to larger facilities in Allerød, Denmark.
  • The production equipment was developed and set up.
  • Customer pilot tests continued with Novozymes, Bagsværd Svømmehal and several other applications.


  • The first products were commercially released.
  • 4 Fulltime employees and a number of consultants working with SANI Membranes technology
  • Customer pilot tests continued with Den Blå Planet, fish farming, industrial waste water and other applications.
  • The first full scale plant was installed at a public pool in the Copenhagen area.
  • The first full scale plant for protein harvesting and protein fractionation was installed in the Copenhagen area.


  • Introduction of the Vibro™ technology.
  • Introduction of the Free Flow Plate™ technology
  • Customer pilot tests continued in aquaculture, industrial waste water, municipal waste water, biotech, dairy etc.
  • Vibro™-LE won the FoodTech Award for best new product at FoodTech 2018, Herning, Denmark
  • The first full scale Vibro™-I plant was installed in Jutland


  • First GMP and FDA compliant Vibro-I's sold
  • Prodution volumen increased
  • Growth of sales team



  • A mechanical engineer with 30 years relevant process industry background.
  • Project management & technical leadership.
  • Execution responsible, VP Alfa Laval for Global Process Technology project and solution execution (Engineering & Supply).
  • VP Alfa Laval for Food technology segment (P&L +200 M€).
  • Manager of a Membrane business – Alfa Laval, Nakskov – membrane products and process solutions. Responsible for R&D, Fabrication, Marketing and Sales, P&L for a large Global business.

          Connect with Henrik Hjelmsmark via LinkedIN

BOARD - SANI Membranes ApS

Henrik Dalbøge

Biotech/life science senior executive with 30 years experience

Chairman of the board

Henrik Hjelmsmark

Senior Executive in Food & membrane technology industry

Member of the board

Andreas Tandrup

CEO, Tandrup A/S,

Member of the board

Mikael Bundgaard-Nielsen

Vice President for Product and Process Development, Novozymes

Member of the board

Thomas Christian Beck

Biotech Senior Executive

Member of the board

Public Private Partnership

Vandkvalitetsforbedring i svømmehaller ved udvikling af ny energieffektiv membranfiltreringsteknologi supported by Miljøstyrelsen - MUDP.      READ MORE

Proof of Concept - Go to Market supported by Grøn Omstillingsfond.   READ MORE

SANI Membranes ApS is registered as supplier to the food industry

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