What are some books, websites, etc. where I can find the detailed protocol for standardization of sodium thiosulfate with dichromate?
My go-to for this is typically Kolthoff &amp; Sandell's Textbook of Quantitative Inorganic Analysis.  They unfortunately do not report a detailed protocol for dichromate standardization of thiosulfate solutions therein, but instead cite Volumetric Analysis, Vol III by Kolthoff and Stenger (Amazon and Google Books).  I don't have access to this volume; WorldCat shows numerous copies in university libraries in my area of the U.S.; more than likely there's a library where you are that has a copy.