This waste disposal system is used in India. Since it's all complex and plain memorization, why not make a mnemonic? :D
For those who don't know the categories and stuff in detail, I'll copy paste them at the end of the post for reference. I'll be sharing the mnemonic first.
Let's begin! ^__^
How to remember Waste Categories:
1-3: HAM (Human, Animal, Microbiology)
4-7: Sharp medico, bloody solid (Sharps, Medicines, Blood stained or Soiled, Solid)
8-10: LAC (Liquid, Ash, Chemicals)