By Tim B. Vander Wood, PhD Particle-size distribution measurement can be difficult using traditional techniques because of low particulate loading in stack emissions. Microscopical measurement of particle-size distributions offers an … [Read more...]
Stack Testing – Method 202 Particulate
We always say that a picture is worth a thousand words. It perfectly applies in this Method 202 residue study. The pictures below show a film residue and particles in a Method 202 back half catch stack sample. This catch was heavy, … [Read more...]
Nanoparticle Testing in Consumer Product: Analysis of Titanium Dioxide Nanoparticles in Powder by SEM and TEM
The surge in consumer products containing nanoparticles continues to raise concern over potential exposure. Proposition 65 in California requires products containing unbound titanium dioxide nanoparticles in powder (that may become airborne … [Read more...]
USP 788 Microscopic Particle Count Test for Injectable Products
Injectable products must undergo a particulate count test to show they meet FDA requirements. USP <788> presents two different particle count test procedures – light obscuration and the microscopic particle count test. This post will … [Read more...]
Stack Particle Size Distribution
. THE PROBLEM: … [Read more...]
Soil Analysis
Soil analysis can provide information about the mixture of solids (minerals and organic matter), liquid and gasses that make up the soil. Soil analysis is helpful because it is important to know the types of minerals that are in the soil … [Read more...]
Introduction to Automated Particle Analysis
1994:23:Vander Wood … [Read more...]
Automated Particle Analysis in Electron Microscopy (1993)
1993:26: Vander Wood … [Read more...]