Hints and Tips for Better Density Measurements
Density measurements provide a fast, easy method for analyzing a variety of liquids, but are subject to various sources of error. Accurate density measurements therefore rely on diligence throughout the entire workflow to avoid erroneous results.
This density measurement guide explains what precautions should be taken to prevent errors and achieve the best results when measuring the density, specific gravity, and concentration of liquids. It covers:
- Testing and adjustments – Whether it is better to perform regular tests or regular adjustments, and how often, what substances to use.
- Samples – Types of samples that are suitable for a digital density meter, what can affect the measurement, how to you measure difficult samples.
- Sampling – The difference between sampling with a syringe and an automatic filling system, how to avoid air bubbles
- Cleaning – How to you clean the measurement cell, which solvents can be used, the effects of improper cleaning on the measurement accuracy.
- Result verification and documentation – How to ensure that measurements are not affected by air bubbles or residual solvent, how to automatically verify if a result is within specification for quality control purposes