---
title: Best Practice for Making Particle Concentration Measurements on the Zetasizer Ultra
description: Download this guide to discover how you can make sure you achieve high-quality particle concentration data.
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GUIDE

# Best Practice for Making Particle Concentration Measurements on the Zetasizer Ultra

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Measuring the particle concentration of a sample is similar to measuring its size, but the sample preparation and the effect of sample measurement properties can have a significant impact on the concentration measurement. To ensure that your data are accurate and reproducible, it is critical to establish that best practice is followed during the sample preparation and measurement process.

**Download this guide to discover how you can make sure you achieve high-quality particle concentration data, with helpful details on:**

- Best methods for sample prep
- Different parameters affecting size and concentration
- Common causes of error

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