Thread: Paint Stripper.
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Old 28th Feb 2018, 10:32 pm   #14
Bazz4CQJ
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Default Re: Paint Stripper.

On the subject of toxicity of chemicals, I was listening on the radio to a scientist talking about lead. At the start of his career (in the US), it was thought that there was a 'safe' level of lead in human blood and that it was around 50 units (units might have been ug/litre). Anyway, during the last forty years that limit has come down and down. In some rural areas of the US, some kids now test as low as 1-5 units, but... the statistics still suggested that the kids with 1 unit showed better cognitive development than kids with 5 units. The suggestion is that some exposure does some harm and more exposure does more harm. The idea of "Safe Levels" has always been largely speculative, and that probably applies to lots of other stuff too!

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