Equipment and Processing Report-02-15-2012

With the increasing use of hot-melt extrusion, extruder manufacturers have developed mid-size twin-screw extruders that facilitate process development and scale-up to commercial processes.

The author discusses the relative advantages and disadvantages of lyophilization in vials and dual-chamber systems.

We need to measure the particle size of a moisture-sensitive powder. We would like to use dry analysis on our laser-diffraction system, but the particles are fragile and we're struggling to get robust results. Is wet measurement with a nonaqueous solvent the only option?

PharmTech's monthly newsletter, Equipment and Processing Report, reviews the Editor's Picks for the February 2012 edition from ACS Valves and G-Con.