Glossary / Lightpath


Lightpath a.k.a pathlength, is the distance between the interior polished walls of a cuvette.  Lightpaths are measured in millimeters and can vary from 0.01 mm up to 200 mm. 

The most common lightpath in use today is 10 mm.  Most manufacturers provide a standard 10 mm rectangular cuvette holder with their machines, however this should be confirmed with the manufacturer because not all machines may be able to support a 10 mm holder.