Aluminum, malleable, lightweight, recyclable, and safer than glass, is widely used for beverage cans. Its resistance to corrosion depends in part on the quality of the protective internal coating. When this coating presents defects in application or uniformity, corrosion can develop, particularly in the presence of sugar.
This article explains the mechanisms involved and proposes a protocol to evaluate the quality of can coatings.
In quality control, production, or research, comparing analytical results is part of everyday practice.
But what happens when two professionals — each confident in the reliability of their work — observe a discrepancy between their measurements?
It’s a common situation, often leading to tension, misunderstanding… or rushed decisions.
Example: Two laboratories measure the alcohol content of the same spirit sample. One reports 40.1% vol, the other 39.8% vol.
Who’s right? Are the results truly incompatible — or simply different within the range of measurement uncertainty?
This article provides a practical framework to interpret such differences rigorously, understand the role of measurement uncertainty, and assess whether two results can be considered technically consistent.
Portable digital density meters calculate alcohol content at 20 °C from density and temperature.
Compact and robust, they are ideal for quick measurements in the field — in cellars, tank rooms, or at the base of transport containers.
This guide will help you achieve reliable results, avoid common errors, and get the most out of your equipment.
When diluting a hydroalcoholic mixture with water, the final volume is lower than the sum of the volume of water + the starting volume.
This article explains its origin. He presents a study which demonstrates that in the case where analysis by distillation requires dilution, it is nevertheless possible to obtain good precision in the measurement of the alcohol level.
To measure the alcohol content in a spirit, the official method by distillation is still the most used method because it is the most universal and the least expensive in investment.
There are different types of distillation devices (direct distillation or steam entrainment), more or less automated, but which all have a maximum field of application for measuring the alcohol level.
This article explains how to use the device even if the alcohol level is above its use limit, while obtaining accurate results using appropriate methodology.