The current radon measurement period ends 31.5.2026. For this reason STUK will send alpha track radon detectors for the last time during this measurement period in 13.3.2026, so that it is therefore still possible to perform the required 2 month long measurement during this radon measurement period. The shipping date of new orders after this date will automatically be moved to the beginning of the next radon measurement period, which starts on 1.9.2026. STUK’s online shop