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keith_ng's profile
Keith Ng
Keith Ng
Keith Ng
@keith_ng

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Keith Ng

@keith_ng

Data-plumber/word-baker: I think the unthinkable, the too-fiddly-to-think, and the too-thinkable-to-remember. B6BB 1706 A8AE 5E03 889C CF2F 5522 BB88 1468 8DF5

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Joined June 2008

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    Keith Ng‏ @keith_ng 8 Sep 2019

    Hey journos/other latecomers to HK. I'm a former volunteer ambulance officer and current journo (tear gassed twice this week), and today we're going make some Hotel Room isotonic saline. But first, let's talk about tear gas.

    7:23 PM - 8 Sep 2019
    • 240 Retweets
    • 550 Likes
    • Ash David Doborjginidze Queen of Antifascism syel skedaddle Jenny Lobasz 🄱🄰🄲🄺 🅃🄾 🄱🅁🅄🄽🄲🄷 linda z 🐧 AxelJr
    19 replies 240 retweets 550 likes
      1. New conversation
      2. Keith Ng‏ @keith_ng 8 Sep 2019

        Tear gas grenades release tiny particles into the air which get onto your skin, in your eyes, and into your lungs, and fucks your shit up on contact. The goal of treating tear gas exposure is simply to wash it off so it is no longer on you. That's it.

        1 reply 17 retweets 95 likes
        Show this thread
      3. Keith Ng‏ @keith_ng 8 Sep 2019

        Isotonic saline is used because it matches your body's natural pH level, so it doesn't sting you. It's nice, but not actually necessary. If the choice is tear gas in your eye or tap water in your eye: PICK THE TAP WATER.

        2 replies 25 retweets 101 likes
        Show this thread
      4. Keith Ng‏ @keith_ng 8 Sep 2019

        To make our Hotel Room isotonic saline, you're going to need: * Salt (non iodised if you can) * bottled water Step 1: Add a teaspoon of salt to 500ml of water. Step 2: Shake till salt is dissolved. Congratulations you've made isotonic saline!pic.twitter.com/rLdO8Kihp1

        4 replies 32 retweets 159 likes
        Show this thread
      5. Keith Ng‏ @keith_ng 8 Sep 2019

        Medics carry saline in these tiny little irrigation (means "washing") bottles. You pop the top off and squeeze and the saline squirt out. This is important! If you're just pouring water out of a bottle, a lot of water comes out at low velocity, so most of the water slides off.pic.twitter.com/6VvBpjHJh2

        1 reply 13 retweets 75 likes
        Show this thread
      6. Keith Ng‏ @keith_ng 8 Sep 2019

        The squirty nozzle allows you to *gently* water blast an area and get all the crap out effectively. This is especially important for eye washing, when you really need to get in there.

        1 reply 10 retweets 69 likes
        Show this thread
      7. Keith Ng‏ @keith_ng 8 Sep 2019

        But good news! You can achieve the same results with a gardening squeezy bottle ($26 from Muji's gardening section, cos I'm fancy like that). That tiny nozzle? Absolutely perfect flow rate for eye irrigation. Just wash out the bottle first, obvs. https://www.muji.com.hk/zh/product/4945247390315 …

        2 replies 17 retweets 87 likes
        Show this thread
      8. Keith Ng‏ @keith_ng 8 Sep 2019

        The bonus is that you actually need very saline. I've used about 150ml so far and I've washes 6-7 pairs of eyes (including mine) with this batch. So if you're worried about weight, carrying even a quarter bottle is fine.

        1 reply 9 retweets 67 likes
        Show this thread
      9. Keith Ng‏ @keith_ng 8 Sep 2019

        Bonus bonus: better for making friends than a packet of cigarettes.

        1 reply 4 retweets 94 likes
        Show this thread
      10. Keith Ng‏ @keith_ng 8 Sep 2019

        In the next episode, we'll cover how to make a... *checks notes* wet towel to cover your face with.

        4 replies 4 retweets 96 likes
        Show this thread
      11. Keith Ng‏ @keith_ng 8 Sep 2019

        Fun and totally unsurprising fact: your whole face is very salty afterwards.

        2 replies 2 retweets 82 likes
        Show this thread
      12. Keith Ng‏ @keith_ng 9 Sep 2019

        Keith Ng Retweeted Keith Ng

        Forgot to mention the Universal Step 0 for all emergency medicine: GTF away from the danger first. Obviously, you're not going to have much success washing off tear gas if you're *in* tear gas.https://twitter.com/keith_ng/status/1170885288484163584 …

        Keith Ng added,

        Keith Ng @keith_ng
        Tear gas grenades release tiny particles into the air which get onto your skin, in your eyes, and into your lungs, and fucks your shit up on contact. The goal of treating tear gas exposure is simply to wash it off so it is no longer on you. That's it.
        Show this thread
        2 replies 12 retweets 93 likes
        Show this thread
      13. Keith Ng‏ @keith_ng 9 Sep 2019

        Application: tilt head, squirt from centre to edge of head so you don't wash the tear gas on your skin *into* your eye. Mmmm. So isotonic.pic.twitter.com/D9eO6biZ4w

        7 replies 23 retweets 125 likes
        Show this thread
      14. Keith Ng‏ @keith_ng 30 May 2020

        If you're going to take one thing away from this thread: get a squirt bottle, fill it with water. It means you can wash your eyes and those of people around you. If you're just pouring out water, it won't go very far.

        2 replies 4 retweets 19 likes
        Show this thread
      15. Keith Ng‏ @keith_ng 30 May 2020

        And from a practical perspective: just be aware it's very scary to get gassed. They might not be able to see properly, and you might seem like a stranger who's trying to stick something in their face. When approaching, be gentle, be clear, offer help, but get consent first.

        0 replies 7 retweets 29 likes
        Show this thread
      16. End of conversation

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