This information sheet is an updated review of the answers to the following questions, and replaces the previously published Q&As:
Thermite reaction: Last term we tried to run the thermite reaction, however I was unable to light the reaction mixture using either sparklers or magnesium ribbon.
Storage of batteries: How do I store small batteries, including button cell batteries, safely?
Biologically preserved specimens
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.
Chemical waste and septic systems: I have been working in the education department for the last eight years, and have recently started working one day a week in a small school.
Agar plate setting conditions, storage, inoculation and disposal: What are the factors that affect the ability of agar to set?
Disposal of products of sodium thiosulfate and hydrochloric acid: Risk assessment (thio
Disposal of empty helium cylinders: From browsing Google, there seems to be a lot of confusion on how to dispose of empty helium gas cylinders.
Disposal of silver nitrate solid: I have collected silver nitrate solution in a winchester and decanted it off, ready to evaporate the solution, so that I am left with just the solid waste.