Theory Guides

Our in-depth Theory Guides explore topics surrounding particle characterization and performing accurate measurements.

Guide to Choosing a Particle Sizer

This guide explores the considerations that must be taken into account when selecting a particle sizing instrument including:

  • Size Range
  • Throughput
  • Accuracy
  • Precision
  • Reproducibilty
  • Resolution

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Guide to Choosing a Zeta Potential Analyzer

Before you purchase a Zeta Potential analyzer, read our helpful guide to ensure you’re selecting the right instrument for your testing needs. This guide covers quantitative and qualitative factors that must be considered including:

  • Support
  • Ease-of-use
  • Versatility
  • Life-cycle Cost
  • Electrophoretic mobility range
  • Throughput
  • Accuracy
  • Precision
  • Reproducibilty
  • Resolution

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Guide to Determination of Particle Size – Making an Effective and Reliable Measurement

In this guide, you will learn about best practices for determining particle size.  Key areas covered include:

  • The Importance of Particle Size
  • Choosing a Particle Size Analyzer
  • Step-by-step guidelines for determining particle size including visual, microscopic, and instrumental measurements

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Guide to Proper Sample Preparation – Electrostatically-Stabilized Nanoparticles in Water

This guide reviews the necessary steps to ensure your sample is properly prepared for testing.  You’ll find information on:

  • Preparation of glassware, syringe, and syringe filter
  • Preparation of diluent
  • Preparation of latex standard for analysis

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Guide for DLS sample preparation

In this guide, we’ll review the steps that should be taken to prepare your sample for DLS analysis.  Topics covered include:

  • Understanding DLS nomenclature
  • Aqueous measurements
  • Dry sample dissolution
  • Liquid sample preparation
  • Concentrations
  • Filtering the solution

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What is a Particle?

Learn more about particles in our helpful guide.  Topics covered include:

  • Elementary vs. Fine Particles
  • The Ideal Particle
  • Targeted Drug Delivery with a Spherical Particle
  • Spherical Agglomerates
  • Other Globular Particles
  • Non-spherical Particles

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What is Particle Size?

This guide covers many aspects of particle sizing.  Areas reviewed include:

  • Length vs. Mass
  • To Be or Not To Be a Sphere
  • Spherical Geometry
  • Equivalent Sphere Diameter
  • Image Analysis
  • Three Types of Radii

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What is a Continuous Particle Size Distribution?

This guide reviews issues surrounding continuous particle size distribution.  Topics covered:

  • Differential Distribution
  • Cumulative Distribution
  • Which Distribution Should I Use to Best Present My Data?

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What is a Discrete Particle Size Distribution?

This guide reviews issues surrounding discrete particle size distribution.  Topics covered:

  • Cumulative Distribution Tabular Format
  • Cumulative Distribution Graphical Format
  • Histogram of Frequency Distribution
  • Plot of Frequency/µ vs. Size
  • Plot of Fraction/µ vs. Size
  • Which Discrete Distribution Should I Use To Best Present My Data?

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What is Particle Size Distribution Weighting?

This guide explores topics related to particle size distribution weighting.  Key areas include:

  • Transform One Weighting to Another
  • Relationship Among Transformed Distributions
  • Warning Signs to Watch For
  • Which Weighting Should I Use to Best Present My Data?

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Still have questions? No problem!

Our team of expert scientists and engineers are standing by to answer your questions about particle characterization instruments