Vibrating Sieving for Pharmaceutical APIs and Ingredients

APIs, excipients and other functional powders for human and animal health products need tightly controlled particle size and reliable removal of foreign matter. Vibratory sieving is a key quality control step that delivers consistent powders while supporting sanitary processing, containment and smooth downstream production.

Controlling Pharmaceutical Powder Quality

Crystallization, drying, granulation and milling can introduce agglomerates, oversize and foreign matter. Before powder moves on to blending, tablet compression, encapsulation or filling, a safety screen removes them, protecting product and equipment and preventing quality deviations. The right solution depends on the powder, cut size, capacity, installation point and containment level.

Safety Screening vs. Classification

Safety screening removes foreign matter, agglomerates and out-of-range particles. Classification separates material into defined size ranges. For solid dose APIs and excipients, particle size distribution affects flow, bulk density, compressibility, blend uniformity and dissolution. Properly configured sieves can do either job, or split product into several fractions.

In-Line Sieving in Pneumatic Conveying

Where powder moves through a closed pneumatic conveying or vacuum conveying line, a pharmaceutical in-line sieve screens out oversize and foreign matter without opening the system. That limits product exposure and operator contact and removes an extra open handling step.

Gravity-Fed and Batch Sieving

Below silos, bag dump stations, feeders or above process vessels, compact pharmaceutical circular vibratory sieves handle safety screening and classification. Controlled vibration moves powder across the screen gently while the required fraction passes the mesh.

Fine Powder and Multi-Fraction Classification

For demanding fine powders, multifrequency rectangular sieves can be adapted to pharmaceutical duty, with one or several decks to produce multiple fractions in one machine. The right configuration also helps with difficult powders, including electrostatic ones.

Sanitary Design and Containment

• 316 stainless steel product-contact parts
• Mirror-polished contact surfaces
• Tri-Clamp and BFM connections
• Minimal crevices and low product retention
• Fast tool-free disassembly for cleaning and inspection
• Sealed designs for powder containment
• Solutions for specific OEB containment levels
• Explosion-protected designs where area and product classification require it

These features help the sieving step fit into cGMP environments where cleanability, containment and controlled handling are critical.

Selecting the Right Sieve

Consider the API or excipient properties, PSD, cut point, throughput, installation point, cleaning procedure, containment needs and connected equipment. In-line, circular and rectangular technologies let sieving be added at many points in a facility.

TiERMAX Pharmaceutical Sieving Solutions

TiERMAX supplies vibratory sieving and classification for APIs, excipients and other ingredients, including MLT Cuccolini pharmaceutical screening technology, for in-line safety screening, gravity and batch duty, fine classification and multi-fraction separation. Contact us to review your product, particle size target, throughput, installation point and containment requirements.