Cleaning and reuse of a plastic container that previously held 10M HCl: I have a large (2.5L) commercial stock plastic container that is empty.

Cleaning and reuse of a plastic container that previously held 10M HCl: I have a large (2.5L) commercial stock plastic container that is empty.
Laboratory coats and aprons: What types of lab coats or aprons should be used in a school laboratory? What should they be made of?
Barium nitrate solutions: Is a 0.1M solution of barium nitrate permissible for years 7-10 in NSW Department of Education Schools? It is not clear in the CSIS chemical search.
Decommissioning a science area: Our school is building a new science area and will be decommissioning the existing science rooms. What advice can you provide on this process please?
Potassium iodide status and EUDs: Can you confirm whether potassium iodide is allowed in WA schools and can you explain what an EUD is?
Disposing of wire gauze mats with ceramic centres: I have some of these and have checked with the supplier in relation to the possiblity of containing Tremolite.
Using an air-rifle in schools to demonstrate velocity of a bullet: We are wondering what rules there are around using a BB pump rifle in schools to demonstrate velocity of a bullet.
3D printing is a relatively new technology and industry and is also one of the latest technologies to enter schools.
There are a wide range of chemicals used in solution form for various experimental activities and demonstrations in the school science curriculum.
Plasma ball: Are there any safety issues associated with using a plasma ball in the classroom? Sources on the internet seems to give conflicting information and I would appreciate some clarity.