What are storage classification?

Please go through the following links

http://pipelinepackaging.com/resources/chemical-resistance-guides/#sthash.RYbEejoA.dpbs

http://www.docs.csg.ed.ac.uk/Safety/general/safe_storage.pdf

http://www.docs.csg.ed.ac.uk/Safety/general/safe_storage_haz-subs_table.pdf

Storage of Classification are those materials or any items need to stored was segregated and classify from his type or specification with different location or address in storage area for example :

Chemicals- Chemicals liquid & powder type chemicals should be different space or storage area.Because Chemicals Liquid due to spillage there a possibility to damage the powder type chemicals maybe more than that, can be have some explosions.Safety purposes.