Downflow Booth

In powder containment, even a microscopic crevice is a safety risk. Deiiang™ separates itself through experience-driven craftsmanship. We don’t just assemble steel; we perfect the surface. Our veteran fabricators utilize a proprietary “Hygienic-Weld” technique, manually grinding and polishing every internal stainless steel joint to a mirror finish (Ra < 0.6µm).

This obsession with smoothness—born from decades of solving cleaning validation failures for clients—ensures there are no “dead corners” where powder can accumulate. While others rely solely on fan power, we rely on aerodynamic plenum designs refined through years of real-world smoke studies, delivering uniform airflow that standard box-builds simply cannot replicate.

A Deiiang™ Downflow Booth (also known as a Dispensing or Sampling Booth) provides a safe zone for handling powders. It uses vertical laminar airflow to push airborne dust downward, away from the operator’s breathing zone, and captures it through low-level filtration.

It simultaneously protects the operator, the product, and the surrounding environment from cross-contamination.

Yes. Our booths are engineered to meet strict containment levels. Depending on the design and filtration configuration, Deiiang™ Downflow Booths can typically achieve containment performance for OEL bands of 10-100 μg/m³.

For highly potent compounds (HPAPI), we offer specialized designs with containment screens or glove ports to achieve even lower exposure limits.

Absolutely. Unlike rigid standard-only suppliers, Deiiang™ excels in “retro-fit” engineering. We can customize the width, depth, and height of the booth to fit your specific room layout or accommodate existing equipment like large powder mixers or pallet jacks, ensuring no wasted floor space.

We utilize a robust “Three-Stage” filtration process for maximum safety:

• G4 Primary Filter: Captures coarse dust to protect downstream filters.
• F8/F9 Medium Filter: Traps fine particles.
• H14 HEPA Filter (Gel-Seal): Removes 99.995% of particles at 0.3 microns, providing the final sterile air supply.

This experience-proven configuration extends HEPA life and ensures consistent airflow uniformity.

This is where our manufacturing experience shines. We use a radius (coved) corner design and our proprietary “Hygienic-Weld” technique to polish all internal stainless steel joints to a smoothness of Ra < 0.6µm. This eliminates crevices where powder could hide, making cleaning validation (swab testing) quick and successful.

Yes. Every Deiiang™ unit comes equipped with Magnehelic gauges (or optional digital sensors) to monitor pressure differentials across filters. This gives operators real-time visual confirmation that the booth is operating within safe parameters and indicates exactly when filters need replacement.

Its primary advantage lies in its intelligent control and stability features:

Auto-Compensation: Automatically adjusts fan speed to maintain consistent airflow as filters load.
Real-Time Monitoring: Constant tracking of differential pressure and velocity (typ. 0.45 m/s).
Safety Alarms: Audible/visual alerts for low flow or filter replacement needs.

The system excels in efficiency and user-friendly maintenance. By dynamically regulating the fan based on actual resistance, it reduces energy consumption and extends HEPA filter life. The intuitive alarm system ensures timely maintenance, minimizing downtime and guaranteeing a safe, negative-pressure environment that reliably protects both the operator and the product from dust and cross-contamination.

Yes. Deiiang™ designs are strictly aligned with cGMP, FDA, and WHO guidelines. We provide a comprehensive validation documentation package (DQ, IQ, OQ) with every unit, which is essential for your facility’s qualification and regulatory audits.

We understand that operators work inside these booths for hours. Through aerodynamic plenum design and high-quality sound-absorbing insulation, we keep noise levels typically below 70-75 dBA, creating a comfortable working environment without sacrificing fan power.

Yes, but this requires a specific configuration. For hazardous environments, we manufacture Explosion-Proof (Ex-Proof) models compliant with ATEX or Class 1 Div 1 standards. These units feature spark-resistant fans, sealed lighting, and intrinsically safe electrical controls. Please specify this requirement when quoting.

While standard units can ship in 2-3 weeks, custom engineered solutions typically require 4-6 weeks. This timeline includes the approval of detailed CAD drawings, precision fabrication, and our rigorous Factory Acceptance Testing (FAT) to ensure the airflow profile is perfect before it leaves our facility.