Pharmaceutical Grade Powder Sieve Shaker for Fine Powder Analysis
By Dahan Application Engineering Team | Aug 2026
Product Overview
The pharmaceutical grade powder sieve shaker is a GMP‑compliant instrument that uses electromagnetic 3D vibration for pharmaceutical powder particle analysis, achieving 20µm accuracy with <1% repeatability error, meeting Ph.Eur. 2.9.38 and USP 786 standards.
Unlike conventional mechanical sieve shakers that rely on gravity and tapping, this pharmaceutical grade powder sieve shaker employs an electromagnetic drive to generate three‑dimensional vibration motion that ensures even particle distribution and maximum passage through the mesh.
About the Author
This article was written and reviewed by the Dahan Mechanical Application Engineering Team. The team has long focused on applied research regarding powder processing and screening equipment for the pharmaceutical industry, accumulating extensive practical experience in equipment selection, process optimization, and compliance with pharmacopoeial standards.
Key Features
- GMP‑compliant – All contact parts meet cGMP standards.
- Stainless steel 304/316L – Corrosion‑resistant, easy to clean.
- 3D vibration – Prevents agglomeration of fine/cohesive powders.
- Programmable control – Amplitude 0–3 mm adjustable; stores up to 99 profiles.
- Enclosed design – Prevents powder escape and cross‑contamination.
- Ultrasonic option – High‑frequency mesh vibration for "self‑cleaning" effect.
How to Prevent Screen Clogging?
A pharmaceutical manufacturer testing high‑electrostatic API powder (30–75µm) experienced frequent clogging with their conventional shaker—40+ min per batch, manual cleaning after every two tests. Testing was conducted per USP 786 guidelines at 22±2°C, 45±5% RH, with 100g samples (n=3).
After switching to the pharmaceutical grade powder sieve shaker with ultrasonic:
| Metric | Before | After |
| Sieving time/batch | 40+ min | 12 min |
| Daily throughput | 12 batches | 40 batches |
| Repeatability error | ±2.1% | ±0.3% |
Independent testing confirms that 3D electromagnetic sieve shakers achieve sieving efficiency comparable to air‑jet systems when operated with 200‑mesh (75µm) sieves.
Why Choose This Model?
- Handles cohesive/electrostatic powders via 3D vibration + ultrasonic.
- Stepless amplitude adjustment (0–3 mm) vs. fixed amplitude on conventional units.
- 99 programmable profiles for batch‑to‑batch repeatability.
- Supports dry and wet sieving for APIs, excipients, tablet granules, capsule powders.
Amplitude & Time Reference
Test conditions: 22±2°C, 45±5% RH, n=3, 100g sample, 200 mesh (75µm).
| Powder Type | Amplitude | Time | Pass Rate |
| Free‑flowing crystalline | 1.5–2.0 mm | 3–5 min | > 98% |
| Cohesive fine (with ultrasonic) | 1.0–1.2 mm | 5–8 min | > 95% |
| High‑electrostatic (with ultrasonic) | 1.0–1.2 mm | 8–10 min | > 93% |
Humidity note: At RH >60%, increase ultrasonic duration by 2–3 min to maintain pass rate.
Technical Specifications
| Parameter | Specification |
| Sieving range | 20 µm – 125 mm |
| Vibration frequency | Up to 3,000/min |
| Amplitude | 0 – 3 mm |
| Max capacity | 10 kg |
| Max sieve layers | 15 |
| Sieve diameter | 200 mm / 8 inch |
| Repeatability error | < 1% |
| Noise level | < 65 dB |
| Material | Stainless steel 304 / 316L |
Applications
API analysis · Tablet granule screening · Capsule QC · Excipient verification · R&D · Food/Chemical/Cosmetic
Troubleshooting Quick Guide
| Problem | Cause | Solution |
| Slow sieving | Low amplitude/overload | Check amplitude; reduce sample |
| Poor repeatability | Uneven mesh/unit not level | Re‑tension; level within 0.1° |
| Agglomeration | High humidity/static | Enable ultrasonic; humidity <50% |
Maintenance
Clean after each. →Check mesh tension regularly.→Calibrate vibration quarterly.→Inspect seals periodically.
FAQ
Materials? Stainless steel 304/316L, GMP‑compliant.
Size range? 20 microns to 125 mm.
Wet sieving? Yes, both dry and wet.
Clogging prevention? 3D vibration + optional ultrasonic.
Pharmacopoeia? Meets Ph.Eur. 2.9.38 and USP 786.
Test standards? USP 786 compliant.
