Constantly variable.

Constantly variable.

We have all seen the overlayed spectra of a serial dilution, demonstrating the flowing waves of an analyte, reduced from excessive absorbance to a barely perceptible ebb at the highest dilution. It clearly demonstrates the Beer-Lambert law - but that isn’t exactly why we got into spectroscopy.

We are here to observe and promote our analyte, to focus on our “unknown” and our process. Often the answer to an extreme absorbance is just to add solvent, to dilute the concentration and achieve an optimised transmission reading. However, it is inefficient to manually retrieve and dilute your sample, both time and analyte will be lost; but there is another answer - a much more process compatible one.

Look again at the ethanol spectra… it is not a variation in concentration, but in pathlength; which is a very useful alternative route to the same destination.

Hellma’s Falcata series support this alternative route, rather than change the concentration adapt your probe! The Falcata lab probes, designed with bench-top analysis in mind have a unique design - enabling you to change the pathlength of your probe as your experiment dictates, simply by exchanging the tip. At every step - from the very first lab experiment, when characterisation has barely begun, through to a fully rationalised PAT process - the Falcata pathlength can be selected to optimise your analysis with no dilution or analyte loss! As your volumes, concentrations, and processes grow you can exchange the lab model for a more resilient pilot-scale probe from the Falcata XP series with the same path length flexibility to help keep the focus where it needs to be - on your process using the pathlength you need.

If you would like to learn more about how Hellma’s Falcata probe family can be a constant in your process analysis, through the flexibility of their variable pathlength, you can visit our probe configurator, contact [email protected] or call Hellma UK on 01702 335 266 for more information.