Hints and Tips for Better Density Measurements
How Can Digital Density Meters Improve Density Measurements?
Density measurements offer a fast, easy method for the analysis of liquids, but are subject to various sources of error. Care must be taken throughout the workflow to ensure accurate measurements and avoid erroneous results.
Modern digital instruments are easy to use, and allow the density of liquids to be determined with a high degree of accuracy. However, the use of high resolution instruments does not, on its own, guarantee accurate results. Care must be taken to avoid introducing errors that could affect the accuracy of the result.
This density measurement guide discusses the precautions to take to prevent errors and ensure accurate results when determining the density, specific gravity or concentration of liquids. It will help you to optimize your measurements, particularly those made with digital density meters, covering:
- Testing and adjustments – Whether it is better to perform regular tests or regular adjustments, how often, and which substances to use
- Samples – Types of samples that are suitable for a digital density meter, what can affect the measurement, and how to measure difficult samples
- Sampling – The difference between sampling with a syringe and an automatic filling system, and how to avoid air bubbles
- Cleaning – How to clean the measurement cell, which solvents can be used, and the effect of improper cleaning on measurement accuracy
- Result verification and documentation – How to ensure that measurements are not affected by air bubbles or residual solvent, and how to automatically verify if a result is within specification for quality control purposes