The container is supplied with the lid fully assembled. The bin has a fill line within it and the contents must not exceed that line. When the sharps container is full to the fill line, you will need to dispose of the contents responsibly. The 1-litre sharps container must be disposed of every 3 months, even if it isnt full yet, in order to stop the build-up of potentially contaminated materials. This container is suitable for the disposal of the following items: needles, syringes, lancets, auto-injecting pens, connection needles, razors, blades, scalpels and more. A sharps bin can be used in both professional and home settings. It is especially useful for diabetics to keep in the house to dispose of insulin needles, or you can place the sharps bin in doctors offices, nurses' rooms and hospitals to hold the medical sharps waste that accumulates in that working environment.