All Laxative articles

  • Universal indicator paper
    Podcast

    Phenolphthalein

    2018-10-25T16:12:00Z

    Kat Arney gets to the bottom of the story of phenolphthalein – a chemical with two very different uses. If you've measured pH in a classroom or had some trouble in the bathroom, you may have met this compound before.

  • Large rolls of paper
    Podcast

    Sodium sulfate

    2015-07-01T00:00:00Z

    Brian Clegg on sodium sulfate, known as ‘the miraculous salt’ because of its strong laxative effects.