Independent Third-Party Laboratory Test Results
All BOLLSEN earplugs are independently tested and certified by PZT GmbH (Notified Body No. 1974), Wilhelmshaven, Germany. PZT is recognized by the Zentralstelle der Länder für Sicherheitstechnik (ZLS) as a notified body for personal protective equipment (PPE).
In March 2024, PZT conducted a Supervised Product Check (Module C2) under EN 352-2:2020 and the PPE Regulation (EU) 2016/425. The report confirms our earplugs comply with all essential health and safety requirements and that production is homogeneous.
Verified Results (PZT Report 2322401-1 Rev.0)
- Product: BOLLSEN New Sound (Earplug)
- Test Type: Supervised Product Check (Module C2)
- Standard: EN 352-2:2020 (per EN 13819-1:2020 test conditions)
- Attenuation: SNR 24 dB (H 26 / M 21 / L 19)
- Environmental Conditions: 22 ± 5 °C; < 85% humidity
- Test Period: 2024-02-20 to 2024-03-06
- Report Date: 2024-03-07 (PZT GmbH, NB 1974)
- Comparison Consistency: Within ±3 dB vs. the certified type samples
Summary of Independent Tests
| Product | Standard | Testing Institute | Report / Certificate | Results (SNR / H / M / L) | Download |
|---|---|---|---|---|---|
| BOLLSEN New Sound | EN 352-2:2020 | PZT GmbH – Notified Body 1974 (DE) | Report 2322401-1 Rev.0 (2024-03-07) | 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 (2026-08-14; valid until 2031-08-13), test report 2322602-1 Rev.0 | 24 / 24 / 21 / 19 dB |
Note: the 2024 C2 production check confirmed no significant deviations from the certified type; differences within ±3 dB per PZT comparison.
“Independent validation is non-negotiable for us. We build earplugs that people trust for sleep, work and everyday life, so every production run must meet the same high standard verified by accredited laboratories.”
— Alen Kurbegovic, Managing Director, BOLLSEN Hearing Protection
Certification & Compliance
BOLLSEN earplugs are certified under EN 352-2:2020+A1:2024 (EU type-examination certificate 2322102-a, valid until 13 August 2031) and comply with Regulation (EU) 2016/425. Packaging and wearer information (version 04.23) meet all requirements of the standard. For verification or regulatory inquiries, contact: