MC DecJet Spiral Jet Mills
Micronization from R&D to Production — DEC Group
Overview
The MC DecJet is DEC’s patented spiral jet mill range for micronizing powders down to sub-micron particle sizes. The range spans from the DecJet 30 — the smallest jet mill on the market, processing batches as small as 0.2 g — to the DecJet 400 for production at up to 400 kg/h.
Powder is fed into a flat cylindrical milling chamber through a venturi. Jets around the perimeter accelerate particles to supersonic speeds in a spiral path. Micronization occurs through particle-on-particle collision — no moving parts, no heat generation, and no contamination from milling media. Finer particles exit from the center through a single collection point.
PSD established at R&D scale predicts exactly what the production mill will deliver.
Key Specifications
| Range | DecJet 30 through DecJet 400 (custom sizes to 800 kg/h) |
| Milling Chamber | 33 mm (R&D) to 400 mm (production) |
| Capacity | 0.2 g/h to 400 kg/h |
| Particle Size | Sub-micron capable (down to 0.5 µm) |
| Typical Yield | 99.5% of batch size |
| Material | AISI 316L mirror polished to Ra 0.25 µm, or Hastelloy |
| Construction | No screws — triclover fittings only, no crevices |
| Process Temperature | Endothermic — no heat generation |
| Explosion Handling | ATEX compliant, 10 bar pressure resistant option |
Key Features
Scalable PSD
Identical particle size distributions from the DecJet 30 through the DecJet 400. R&D PSD transfers directly to production with no re-optimization.
No Heat Generation
The jet milling process is endothermic. Safe for heat-sensitive APIs where mechanical milling would cause degradation.
99.5% Yield
Single collection point and screw-free construction minimize product loss. Critical for expensive APIs or compounds with limited availability.
Containment Integration
All models integrate into containment isolators for high-potency compounds. The DecJet 30 and 50 fit mobile flexible isolator systems.
DecJet 30 — Milligram-Scale R&D
The smallest jet mill on the market (529 × 180 × 260 mm). Operates with just a nitrogen bottle. Processes batches as small as 0.2 g.
ATEX-Compliant Construction
Rated for explosive atmospheres with a 10 bar pressure resistant option. No moving parts in the product path eliminates mechanical ignition sources.
Applications
- Pharmaceutical API micronization
- Inhaled drug products requiring precise PSD control
- High-potency compound micronization under containment
- Early-phase R&D with limited API availability
- Scale-up from milligram R&D to production throughput
- Fine chemicals, cosmetics, and battery materials
MHS Pharma — Northeast US Representative
MHS Pharma provides direct technical representation for DEC Group across the Northeast United States. Contact us to discuss micronization solutions for your application.
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