Replacement of safety eyewear: Is there any specific guideline about how often safety glasses should be replaced?

Replacement of safety eyewear: Is there any specific guideline about how often safety glasses should be replaced?
Pregnancy and the school science workplace: I recently found out I am pregnant and just wanted to enquire as to whether there are any chemicals/experiments that (to your knowledge) I would need to
Making slime using borax: Is it ok to make slime in schools using borax? I have concerns about the health effects of borax.
Proposal to continue Science ASSIST as a subscription service.
Chemical Storage - barium nitrate. My container of barium nitrate looks like it has water inside. Is there a way that I can separate the water from the barium nitrate?
Biology activity observing skin cells: We have been asked to prepare the experiment for Yr 10 students to do- Observing Skin Cells - for observation under the microscope.
Chemical waste disposal - from esterification activity: I would like to know how the waste generated from the Isopentyl Acetate esterification process should be disposed of?
Storage of starter caps: Where should I store my starter caps?
Updated June 2020
This document contains quick links to the technical laboratory questions which have been answered by the Science ASSIST Team and published on this website.
Updated June 2020
This document contains quick links to the technical resources that have been developed by Science ASSIST.