This is dependent on the recyclable material type that you are giving out. On average, you are required to have a minimum of 5 KG for accross the board.

While placing a pickup request on the USSD, Whatsapp or Webapp you will see the minimum required Kilogram. You can directly check; https://scrapays.com/recyclables to check the minimum required kilograms for each of the recyclable waste material types.