Description
The Dromex DHCT-B1 Twin Unifit Gas Filter is a reusable dual‑cartridge respiratory filter designed to protect the wearer from medium concentrations of inorganic gases and vapours in industrial and hazardous environments. It is engineered for use exclusively with compatible Dromex twin‑cartridge respirators, delivering certified, reliable respiratory protection where airborne inorganic contaminants are present.
Key Features
- 🧪 B1‑Class gas filter for inorganic gases and vapours
- 🔧 Unifit twin‑cartridge design with right‑hand threaded connection
- 🧩 Compatible with Dromex DH102, DH202 and DHFFM respirators
- 🫙 Activated carbon filtration media in durable housing
- 🔄 Reusable cartridge design with valve replaced on each filter
- 🧴 Individually sealed cartridges for hygiene and shelf integrity
Benefits
- ✅ Certified protection against hazardous inorganic gases
- ✅ Low breathing resistance for extended wear comfort
- ✅ Extends respirator service life when paired with pre‑filters
- ✅ Secure attachment reduces risk of leaks during use
Specifications
| Brand | Dromex |
| Model | DHCT‑B1 |
| Product Type | Twin cartridge gas filter |
| Filter Class | B1 (Inorganic gases and vapours) |
| Standard | EN 14387:2004 +A1:2008 |
| Certification | CE, NRCS AZ2011/54 |
| Connection | Right‑hand thread, twin cartridge |
| Colour | Black |
| Packaging | Set of 2 filters per packet, individually sealed |
How to Use
- Inspect cartridges for damage before use.
- Ensure compatibility with a Dromex twin‑cartridge respirator.
- Screw each filter onto the respirator using the right‑hand thread.
- Perform a seal and leak check before entering the work area.
- Replace filters immediately if gas breakthrough is detected.
Do not use this filter in oxygen‑deficient atmospheres, unknown contaminant concentrations, explosive environments, or for firefighting operations.
Customer Reviews
⭐⭐⭐⭐⭐ “Solid build and easy to fit. Works perfectly on my Dromex mask.” — Johan S.
⭐⭐⭐⭐ “Comfortable to breathe through even during long shifts.” — Lerato S.
⭐⭐⭐⭐⭐ “Reliable inorganic gas protection I trust on site.” — Mark S.
FAQs
What does a B1 filter protect against?
It protects against inorganic gases and vapours within certified concentration limits.
Is this filter reusable?
Yes, it is reusable until gas breakthrough occurs or service life is reached.
Can it be used on single‑filter masks?
No, it is designed exclusively for twin‑cartridge respirators.
Can pre‑filters be added?
Yes, compatible Dromex pre‑filters may be used to protect against particulates and extend cartridge life.
Industries & Applications
- 🏭 Chemical processing
- ⛏️ Mining and resources
- 🧪 Industrial manufacturing
- 🛢️ Oil, gas and petrochemical work
- 🚧 Construction and maintenance
Compliance & Certifications
Certified to EN 14387:2004 +A1:2008 for gas filters and approved under NRCS AZ2011/54 for use in regulated PPE applications.
Choose dependable respiratory protection trusted across multiple high‑risk industries. The Dromex DHCT‑B1 Twin Unifit Gas Filter delivers proven inorganic gas filtration performance when safety cannot be compromised.
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