Independent Laboratory Test Results
BOLLSEN earplugs are tested and certified by PZT GmbH (notified body No. 1974) in Wilhelmshaven, Germany. Our current EU type-examination certificate, No. 2322102-a, was issued on August 14, 2026, under EN 352-2:2020+A1:2024 and the PPE Regulation (EU) 2016/425, and it is valid until August 13, 2031. PZT also checks our production at random; the latest check was in March 2024.
Current certificate (EU type-examination certificate 2322102-a)
- Models: BOLLSEN New Sound: Life+, Life+ Pink, Music SoundPRO, Moto+, WorkPRO, Watersafe+, Kidz+
- Standard: EN 352-2:2020+A1:2024, Annex V of Regulation (EU) 2016/425
- Certified values: SNR 24 dB (H 24 / M 21 / L 19 dB)
- Test report: 2322602-1 Rev.0, July 24, 2026
- Issued: August 14, 2026, by PZT GmbH, notified body 1974
- Valid until: August 13, 2031
Latest production check (PZT report 2322401-1 Rev.0)
- Product: BOLLSEN New Sound earplug
- Test: supervised product check (Module C2)
- Standard: EN 352-2:2020, tested under EN 13819-1:2020 conditions
- Noise reduction: SNR 24 dB (H 26 / M 21 / L 19 dB)
- Test conditions: 22 ± 5 °C, under 85% humidity
- Test period: February 20 to March 6, 2024
- Report date: March 7, 2024
- Consistency: within ±3 dB of the certified type samples
Summary of independent tests
| Product | Standard | Testing institute | Report / certificate | SNR / H / M / L |
|---|---|---|---|---|
| BOLLSEN New Sound | EN 352-2:2020 | PZT GmbH, notified body 1974 (DE) | Report 2322401-1 Rev.0 (March 7, 2024) · PDF | 24 / 26 / 21 / 19 dB |
| BOLLSEN New Sound (Life+, Life+ Pink, Music SoundPRO, Moto+, WorkPRO, Watersafe+, Kidz+) | EN 352-2:2020+A1:2024 | PZT GmbH, notified body 1974 (DE) | EU type-examination certificate 2322102-a (August 14, 2026, valid until August 13, 2031), test report 2322602-1 Rev.0 · PDF | 24 / 24 / 21 / 19 dB |
The 2024 production check found no significant differences from the certified type; all values are within ±3 dB.