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Chemicals in lessons - extraction needed?

Discussion in 'Science' started by tricolas, Jul 20, 2020.

  1. tricolas

    tricolas New commenter


    I am a non-specialist Science Teacher and am going to be teaching Science lessons in September.

    Having looked at the SOW, there are some basic chemicals that we will be using (iodine, methylene blue, rubbing alcohol, calcium hydroxide tablets, ethanol, sodium hydrogen carbonate).

    The chemicals will be locked in a yellow cabinet, but I'd like to know if there is a requirement for some sort of extraction/filtration system within the classroom?

    Thanks in advance
  2. Skeoch

    Skeoch Star commenter

    You MUST carry out a risk assessment for each practical. Use your school or LA or MAT subscription to CLEAPSS for support. Specifically you need their Hazcards for each substance. If not members, join tomorrow. Be aware that you are responsible under COSHH regulations as well as H&S at Work Act, as is your employer.
    phlogiston and border_walker like this.
  3. tricolas

    tricolas New commenter

    Thanks for your reply - I'll get on to it tomorrow.

    So, there's no requirement for extraction or the like? There won't be any gas taps for bunsens as it's an ASD school.
  4. Skeoch

    Skeoch Star commenter

    The need for ventilation depends on the substances involved, what you do with them, and quantity. You must do a risk assessment for each procedure. The Hazcards are an essential aid to this. Join CLEAPSS forthwith!
    border_walker likes this.
  5. border_walker

    border_walker Lead commenter

    If you add turpentine to the iodine you will see why sometimes you need a fume cupboard.
  6. phlogiston

    phlogiston Star commenter

    Based on your list of chemicals, I would say the extraction systems are unlikely to be necessary. However, this does not relieve you of the need to do a proper risk assessment of every practical activity you do.
    You will still need goggles, possibly gloves, handwashing facilities, and cloths to clean benches after practical work.
  7. tricolas

    tricolas New commenter

    Thanks for replies, appreciate all the advice.

    We are joining CLEAPSS and I will ensure risk assessments or carried out.

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