Penn State Agronomy Guide has a list of the various glyphosate products, listing whether they are 4 lb products, 5 lb products and fully loaded, partially loaded, or Not loaded. 

I suggest going to your state's Agronomy Guide/ Pest Management guide, and see if they have a similar table listing.  IF not, I would go back to the dealer you brought it from, and ask them to be sure.

I will say... as I review the list in the Penn State Agronomy Guide, there is only one product that is listed as "None".  All others in that list are considered "Partially Loaded", or "Fully Loaded".  That is not to say there can't be other Glyphosate Products that are not considered "Not Loaded".

This is important more than when just tanking mixing Glyphosate with Clethodim.  If you are applying Glyphosate alone, and that product is considered "Not loaded", you then need to be adding surfactants yourself. So, when buying Glyphosate of whatever brand, you need to know from your dealer whether the Glyphosate you purchased needs to have additional adjuvants added. This is something your dealer should be telling you.