Tag Archives: DLS

Temperature Gradient Analysis for Determining Melting Point of Proteins Using the NanoPlus

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

Measuring Zeta Potential of Non-aqueous Suspensions

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

Particle Sizing Applications in the Beer Brewing Industry

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:

Continue reading