Scottish Schools Education Research Centre (SSERC) have released guidance to help Early Years, Primary and Secondary Science and Technology Departments prepare and be ready to keep learners and all others safe as they returned to establishments.
The link below includes advice about hygiene and adapting practical work.:
https://www.sserc.org.uk/health-safety/covid-19-back-to-school/
Since the return of learners into school buildings, SSERC have and will continue to add to these resources with an FAQ page dealing with the general issues that have arisen.