Legalities of practical work: While I know it is not ideal, is it illegal for a science class to undertake a practical if the regular classroom science teacher is absent?
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Phenanthroline: My Chemistry teacher would like to use Phenanthroline for senior chemistry EEI’s. The MSDS lists this chemical as Acute hazard category 1, and Acute toxicity oral category 3.
Sterilisation of microbiological waste: Science ASSIST has received a number of questions, which all relate to this topic, we will cover all of these in this quest
Standard Operating Procedure (SOP) and detailed method on how to handle liquid nitrogen (LN2).
When choosing a microscope consideration needs to be given to the application, skill level of staff and students and budget.
Cleaning microscope slides: What is the most effective way to clean glass microscope slides so they are suitable to reuse?
What is the usual practice for cleaning prepared slides?
Disposable nitrile gloves: How chemical-resistant are disposable nitrile gloves? Are they only resistant to certain classes of chemicals and up to certain concentrations?
Ethylene glycol disposal: I have small quantities,( less than 50mL of each) of 20%, 30% & 50% ethylene glycol solutions and would like to know the best way to dispose of them?
Drones: The use of drones is becoming more
GHS Hazard category ratings: Can some one please explain the rating on the chemicals in the SDS please?