Ralph Vokes

Scan speed is one of the settings specified in analytical conditions for UV-VIS spectrophotometers.The scan speed setting choices include fast, medium, slow, and very slow speeds, which determine t...

This is a common question without a fixed answer. In fact, it is hard to find any specific published methods. Why are there no specified methods? The reason is because of the diverse variety of sam...

It is important to know the minimum limit of quantitation when measuring the concentration of a solution. The minimum limit of quantitation is the lowest limit of concentration that can be measured...

Two types of spectrophotometer construction are available. One is the single-beam typewith a single light beam in the sample compartment. The other is the double-beam typethat has two light beams i...

There are many components within a UV-Vis Spectrometer and much more in a UV-Vis-NIR version.  Electronic components take a while to establish stability and performance, especially source lamps.  I...

When using a UV Spectrometer, there are many issues which can affect your desired results and produce unwanted unusual spectra, absorbances or artefacts.  To prevent this from happening, it is a go...

IRAffinity FTIR Mirror Lock-Down Procedure and Storage   The IRAffinity-1S spectrometer has a research-grade interferometer optic system with a moving mirror.  It is important to follow a lock-down...