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John Cuthber

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John Cuthber last won the day on February 29

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About John Cuthber

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    Chemistry Expert
  • Birthday 11/10/1965

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    England

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  1. OK, nor is the local jam making factory; but they aren't trying to get a govt contract. are you aware of this issue? https://www.worcesternews.co.uk/news/18339699.worcesters-gtech-told-not-produce-much-needed-ventilators-government-chief-executive-says/
  2. It's a strong contender for "least useful element".
  3. " mass manufacturing of PM products did not begin until the mid or late 19th century" From https://en.wikipedia.org/wiki/Powder_metallurgy#History_and_capabilities tells us that it would have been a well established technology by the late 20th Century. So , yes, it would have been trivially easy to do it in 1979 (I have to admit I misread "tholium" as thulium. ) Mixing real elements is usually easy. Mixing in stuff that doesn't exist is more difficult. Well, maybe he couldn't, but I could. Do you want to believe me, or the guy who declared himself incompetent?
  4. There is some suggestion that he should have asked someone who knew about them. We don't need a new design- the things are complicated and our medical staff have enough to do without learning a new system. He would have achieved more if he had got his existing factories to make the current design. But, obviously, that wouldn't have got much publicity.
  5. If the only source is laundry detergent, I'd not worry. Dioxane is roughly as volatile as water so, any that isn't rinsed away is likely to evaporate when clothes are dried. I'd imagine that , with considerable care, and good analytical chemistry you might be able to show that there was some tiny trace left behind but 10,000 ppb Is already not much. Ten parts in a million is a thousandth of one percent. That's before you dilute it in the washing water, then rinse it, then dry it.
  6. So, your metric isn't a good one, because it's massively distorted by the pattern of testing.
  7. So a country like Zimbabwe is a success because it can not afford testing and no case will be confirmed. Don't worry, we will have plenty of time to test epidemiological models over the coming months.
  8. Acetic acid, at concentrations high enough to affect the glue will really trash your skin.
  9. You could powder them then sinter them. I have no idea why you would bother.
  10. I'm willing to bet that water and alcohol each kill more. Both are vital in the fight against Covid But the point isn't "what kills most people?", its what "saves more people than it kills" to the greatest extent? If people have bleach, but not peroxide then telling them not to use bleach is a serious mistake.
  11. Do you mean the sulfa drugs? A rather old group of anti bacterials? They are useful in some cases, but they are no use against a virus.
  12. When I see a list with lead, arsenic and mercury on it, I don't immediately think they would be good for me. There are lots of things that wreck proteins- thos metals and bleach are good examples. I don't plan to drink bleach as an antiviral. I'm made of proteins too.
  13. "Is this study linking phones to cancer reliable?" If it was, I'd expect to hear about it on the news headlines rather than a discussion forum.
  14. Choline doesn't smell. But bacteria will convert it to trimethylamine which smells fishy. Rinse the containers with water. A bit of choline isn't going to cause much problem (even if you end up drinking it). As you note... It's hardly toxic.
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