# Siebec/Quali-filtres acquires Polymem

French group Siebec/Quali-filtres has acquired Polymem, a specialist in membrane filtration systems, for an undisclosed amount. The acquisition adds microfiltration, ultrafiltration and nanofiltration technologies to Siebec's portfolio.

- Type: Acquisition
- Announced: 2026-05-05
- Where: France
- Status: announced
- Products: membrane filtration systems, microfiltration, ultrafiltration, nanofiltration
- Sectors: [Water Treatment Equipment](https://endata.com/sectors/water-treatment-equipment.md)

## Companies

- [Polymem S.A.](https://endata.com/companies/55962.md) (target)
- [Siebec](https://endata.com/companies/92099.md) (acquirer)
- [Quali-filtres](https://endata.com/companies/92100.md) (acquirer)

## Sources

- [revue-ein.com](https://www.revue-ein.com/actualite/siebec-quali-filtres-acquiert-polymem), 2026-05-22: "Cette opération renforce ainsi les compétences du groupe en filtration industrielle en ajoutant à son offre historique de filtres mécaniques et machines de traitement des eaux industrielles les technologies de microfiltration, ultrafiltration et nanofiltration sur membrane à fibre creuse."

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.