Set Up Samples (SUS)
Set up Samples were described in a previous blog post by Charlie Hodges entitled “How to Choose the Correct Aluminum Reference Material for Your Application” but in general, they are homogeneous reference materials used for daily drift correction or standardization or slope correction, typically for arc spark optical emission spectroscopy. These materials are homogeneous and are usually provided with a certificate of analysis showing the approximate chemical composition but differ from a certified reference material in that there is no supporting statistical data. These types of materials offer a low cost alternative to consuming expensive CRM’s for daily drift correction.