The NanoPlus includes a temperature gradient feature for size and zeta potential. This unique feature allows the researcher to further utilize the built-in Peltier Thermo-electric controller for temperature studies. The sample cell in the NanoPlus can be held at a specific temperature between 5°C to 90°C or a gradient of increasing or decreasing temperatures in 0.1°C increments or greater. This is ideal for determining the melting point, or denaturing point, of proteins using the NanoPlus. Continue reading
Sub-micron particles suspended in liquid medium are regularly utilized in many industries, from food and pharmaceutical production to lubricants for machinery. The stability of these suspensions is vital to their function and shelf-life. The typical way to characterize the stability of a suspension is to measure the zeta potential of the suspension.
So what is zeta potential and how is it used to determine suspension stability? Continue reading
Jack G. Saad, part of the Scientific Services group specialized in particle sizing, recently presented at the 2013 American Society of Brewing Chemists (ASBC) Conference in Tucson, AZ. The presentation, entitled “the particle size paradox,” was given before an audience of food scientists in the beverage industry.
Based on literature and conversations with attendees, particle sizing applications of interest include:
- Use of Electrical Sensing Zone (Elzone) for yeast counting, particulate counting, and cleaning validation.
- Use of Dynamic Image Analysis (Particle Insight) for shape and size analysis of diatomaceous earth used in filtering.
- Using Dynamic Light Scattering (NanoPlus AT) for nanobubble formation studies for controlling gushing of carbon dioxide in the presence of hydrophobins.
- Using Static Light Scattering (Saturn) for general particle sizing applications in food science, like flour.