# The New Silicone N99 Half-Piece Respirator

> **NCT04454606** · NA · COMPLETED · sponsor: **Bangkok Metropolitan Administration Medical College and Vajira Hospital** · enrollment: 43 (actual)

## Conditions studied

- COVID
- Personal Protective Equipment

## Interventions

- **DEVICE:** Fit test
- **DEVICE:** Filtration Test

## Key facts

- **NCT ID:** NCT04454606
- **Lead sponsor:** Bangkok Metropolitan Administration Medical College and Vajira Hospital
- **Sponsor class:** OTHER_GOV
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2020-05-01
- **Primary completion:** 2020-05-15
- **Final completion:** 2020-05-31
- **Target enrollment:** 43 (ACTUAL)
- **Last updated:** 2020-07-01


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04454606

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04454606, "The New Silicone N99 Half-Piece Respirator". Retrieved via AI Analytics 2026-06-09 from https://api.ai-analytics.org/clinical/NCT04454606. Licensed CC0.

---

*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*