Claros Technologies raises $55M Series B to scale permanent PFAS destruction

What's the deal? Claros Technologies, a Minneapolis-based specialist in destroying and analysing PFAS — the "forever chemicals" — has closed a $55 million Series B. Treehouse Family Capital led the round, with Daikin America, VeraltoDealroom has a profile for this one. Try Dealroom →, Bush Foundation, Nordea Asset Management, and Saint Paul & Minnesota Foundation participating alongside existing backers. The total includes previously announced convertible-note funding.

What's the endgame? Claros makes ClarosTechUV™, a patented system that permanently destroys PFAS at industrial scale, plus its mobile ClarosLabs™ testing operation. The money will fund global commercial deployments across North America, Europe, and Asia, expand manufacturing, and support strategic hires in engineering and commercial operations.

Why now? The company points to two triggers: proven results destroying PFAS with major industrial manufacturers and recent breakthroughs remediating contaminated groundwater. Tightening PFAS regulations worldwide are pushing industries and governments from managing the chemicals toward permanent destruction.

What's the strategy? Claros positions its technology as enabling continued PFAS use in critical sectors — semiconductors, aerospace, pharmaceuticals, and healthcare — while still allowing large-scale destruction.

"Over the past year, Claros has made the leap from breakthrough technology to successful commercial reality," said chief executive officer and co-founder Michelle Bellanca.

The signal: The round sits in the top 8% of all US nanotech Series B rounds on record, a sign of investor appetite for the sector. Backing from strategics such as Daikin America and Veralto — spanning industrial and environmental markets — reflects growing commercial pull as the "forever chemicals" problem moves from monitoring to remediation.

Image credit: Claros Technologies