Canada Fluorescence - Identifying Hf/Lf/Df Etc

Recently acquired a large collection of CDN plateblocks and was about to begin cataloging when I remembered the whole LF/DF/HF etc differences in Unitrade. I have an old UV blacklight that is similar to this one: http://www.electronicsnmore.com/images/zluvb.gif so maybe that is half my problem but I am not sure how to really be sure what the LF/DF/HF and so on. Is there a way or several stamps that are guaranteed to be only one or the other that I can set aside and use to compare to?

Any help is appreciated!