Every part of the inventory has its own page

Chemical groups, chemicals, bottles and suppliers each have their own list and their own address, all under /inventory, and you switch between them with the tabs at the top. Open a bottle and you can see which chemical it is and which compound that is a grade of, and click straight through to either. Group the bottle list by room, cabinet or shelf. Removed and archived bottles are a filter on the bottle list now, not separate pages. Behind all of it, chemicals, their grades and the products suppliers sell them as are stored records, so a bottle points straight at what it is - and a supplier's catalog product has its own page listing its pack sizes, its safety data sheets and every bottle of it in your lab. Hazard symbols come from PubChem's primary hazards, so a bottle shows the symbols a regulator actually assigned rather than every one a supplier ever suggested.