Education

The first three parts in this series discussed what the QUV/uvc is and why it was developed, outlined two published UVC exposure protocols, and provided background information for developing UVC exposure protocols. In this final post in the series, w...

In the last post on the QUV/uvc, we discussed two published standards with UVC exposure protocols, covering quite different applications. In this post, we’ll discuss designing QUV/uvc exposure methods for materials that encounter UVGI protocols in us...

In our first post on the QUV/uvc, we discussed why the QUV/uvc was designed and the differences between it and the QUV accelerated weathering chamber used for generations to conduct UV weathering studies. In this post, we’ll go over published UVC exp...

The QUV/uvc is a new version of the QUV accelerated weathering tester. The main difference between it and other QUV models is that it is designed to operate UVC lamps, which are functionally identical to those used in ultraviolet germicidal irradiati...

ISO and ASTM are the two major international standards bodies for weathering and corrosion testing. Although they use different terms and organize the documents somewhat differently, they share very similar structures, and most other standards bodies...

A very common and fundamental question to ask when beginning a weathering and/or corrosion testing program: “What kind of accelerated test should I run?” It’s a critical question to answer, but there isn’t one general answer that covers all customer ...

Q-Lab includes an air preconditioner as a standard accessory with every Q-FOG CRH tester. Not all manufacturers do this, so we often are asked why it is necessary. In short, the Q-FOG CRH air preconditioner ensures reliable, stable, repeatable chambe...

This very common question is often well-meaning but can at times limit one’s understanding of weathering of materials. It’s like asking if someone is interested in a car or a vehicle - a car is a type of vehicle, but not every vehicle is a car. Likew...

The dew point is the temperature at which dew (condensation) forms and is a measure of atmospheric moisture. It is the temperature to which air must be cooled at constant pressure and water content to reach saturation. Dew points are expressed as a t...

The short answer to this question is no, for two main reasons:There are no international corrosion standards that contain mandatory requirements for the bubble tower water temperature.Bubble tower temperature is not critical to testing, and as a resu...