Nanoparticle Tracking Analysis (NTA)

 Nanoparticle Tracking Analysis (NTA) Diagram

Nanoparticle Tracking Analysis (NTA) technology, which is one of the first commercially available technologies allowing high-resolution particle size distribution on a number-weighted basis and concentration analyses of submicron particles.

NTA technology employs the following steps:

A highly focused laser passes through a liquid dispersion in a specially designed cell.

As the nanoparticles in the dispersion interact with the laser, they are observed as points of light moving under Brownian motion through a microscope.

The rate at which the particles move is a function of their diffusional rate, which is in turn a function of their size as given by the Stokes-Einstein equation.

By tracking the motion of each particle over a specified amount of time, the diffusional rate can be measured and the particle size calculated.

Since the cell is a known volume and the particles present are individually counted, an accurate particle concentration can be calculated simultaneously. 

ASTM E2834-12 describes this innovative technique and provides guidance for industry use.

Nanoparticle Tracking Analysis Sample Report

Ready to get started?

Click the button to the right to learn how to submit sample material for particle size and characterization analyses. If you have more questions along the way, please contact us.