Particle Size Distribution Analyses - Air Permeability Diameter
This classical analytical technique determines the average particle size by measuring the pressure drop across a packed powder bed using a water manometer. The pressure drop is a function of the permeability of the packed bed. This is related to the surface area of the particles which is then transformed to an “average size” based upon the assumption that the particles are spherical. The disadvantage of the technique is that it does not report on the statistics of the size distribution.
Fisher Sub-Sieve Sizer - The Fisher Sub-Sieve Sizer tests powders quickly and reproducibly for their Average Particle Diameter - also known as the Air Permeability Diameter.
Industries Served
-
Abrasives Serving the abrasive industry over the last 2 decades, the most common testing performed for this field is particle size and shape analysis. The world of abrasives can encompass a host of varying...
-
Dietary Supplements Concurrent with the U.S. Food and Drug Administration’s final rule establishing regulations to require current good manufacturing practices (cGMPs) for dietary supplements, PTL can offer cGMP services...
-
Environmental Testing Services Particle size, particle concentration and other physical characterization analyses are critical to many environmental applications. Regulatory agencies in the environmental sphere demand strict compliance...
-
Medical Devices Advances in biomedical implant and device technology continue to present new challenges in the area of physical testing. Particle Size Distribution, Surface Area and Porosity measurement data are...
-
Pharmaceutical Testing Services Supporting drug development with pharmaceutical testing is some of the most exciting work we do. As a premier cGMP contract service laboratory, PTL partners with pharmaceutical scientists to identify...
-
Beauty / Cosmetics Testing PTL’s analytical staff has years of experience designing test methods and performing analysis for cosmetic, skin care, fragrance and personal hygiene samples. Whether your company needs a third...
- 1
- 2