About Cazdon Labs
Indoor air, treated as a measurement problem
Cazdon Labs is a physics-led indoor-air practice serving homes and businesses across Helsinki and Uusimaa. We exist because air quality - and radon in particular - is a quantitative problem that too often gets handled qualitatively.
A physicist's approach
Radon is ionising radiation, and assessing it properly is a dosimetry problem: where you place a detector, how long it integrates, how a building's ventilation cycles, and how you correct for season all change the result. Cazdon Labs was founded by a physicist to bring that rigour to a market that often treats measurement as a formality. We read the data the way a lab would, and explain what it means in language you can act on - including the WHO and STUK thresholds your numbers are measured against. [1] , [5]
What we stand for
Measured
Every claim we make about your air is backed by an instrument reading and the right method - not a guess.
Honest
We interpret your data straight. If the maths says you're compliant, we tell you, even when it means selling you less.
Independent
We're not tied to a single hardware vendor. The recommendation is whatever the physics and the law actually require.
End to end
From the first measurement to the final STUK sign-off - and ongoing air quality after - one partner owns it.
See if the law applies to you
A 30-second check, then a fixed-price quote if you need us.
Check your obligation