potassium bromate: I am wondering if it is safe/acceptable to order potassium bromate in solid form for a visually impressive science reaction for open day purposes.

potassium bromate: I am wondering if it is safe/acceptable to order potassium bromate in solid form for a visually impressive science reaction for open day purposes.
Esters – preparation, properties and disposal
This is a combination of several questions
Organic chemistry: Could someone please advise about the safe storage and disposal of esters.
Cleaning glassware: Dichromic acid glass cleaner waste - I use concentrated sulfuric acid and sodium dichromate in the glass cleaner I make.
Information for the use of lasers in schools.
This set of downloadable documents detail standard operating procedures for the use of lasers in schools.
Sulfur disposal: Could you please advise on the procedure for disposing of sulfur, specifically sulfur mixed with iron filings and HCl.
Making Sherbet: Can you tell me if any safety precautions are required for the sherbet activity, which allows students to create an acid–base reaction in their mouth?
This downloadable resource provides recommendations for running a science preparation room—how to efficiently and safely organise practical activities.
Mercury Spills: We have a small amount of mercury in a thick-walled test tube, which only comes out once a year and is handled by the teacher. I do not have a spill kit for this.
Number of exit doors in labs and prep rooms: How many exit doors must a lab and a prep room have? Should they be on opposite sides of the lab? Are sliding doors allowed?