Gadget and Tech
Me and Liquid Nitrogen
One of the objectives of my thesis project is to prepare porous material. In order to determine whether my material is porous or not, I’ve to check its porosity, surface area, etc. using an instrument called BET. The thing about BET that I don’t really like is I have to use liquid nitrogen. Pouring the liquid nitrogen from the vacuum tank to the dewar is one h*** of a thing to do. It’s freakin’ scary. The sound when it boils and the vapour that comes out from the tank…those things really scared Angah (my labmate) and I especially the first time we got to do it on our own…
For those who haven’t heard of this thing, liquid nitrogen is pure nitrogen, in a liquid state. It is produced industrially in large quantities by fractional distillation of liquid air (don’t bother to understand this…hehe…). At atmospheric pressure, liquid nitrogen boils at 77 K (-196 °C/-321 °F), and freezes at 63 K (210 °C/346 °F). It is a cryogenic fluid which can cause rapid frostbite on contact with living tissue. In other words, you’ll freeze your hand if you touch it. Just imagine if you accidently pour it on your feet. Argghh…that fact really freaks me out…
Liquid nitrogen is actually not that dangerous if you handle it in a proper way and wear those PPE (personal protective equipment) like safety boots, glove, goggle, etc (like I did…hehe…). You’ll get use to it if you have to use it everyday (tp saya still takut gak).
Some people might laugh if they read about this (yelah.. betapa penakut nye saya…) because there are people that is find with it (blh buat main lagi…). Like this one article I found on the net, they use liquid nitrogen to make ice-cream. Interesting huh?? (actually benda ni dah lama, saya je baru tau..huhu…). The ingredients and methods are just the same like making the normal ice-cream but the freezing part is different. Instead of putting it inside the freezer, liquid nitrogen is used to freeze the ice-cream. It took only 10 minutes to freeze the ice-cream. Cepatkan?
Check this web out: http://www.polsci.wvu.edu/Henry/Icecream/Icecream.html.
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9 comments for “Me and Liquid Nitrogen”
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hehe..la..ingt kan writing thesis td..tgk ade objective siap…haha.liquid nitrogen mmg menakutkan.serius!
poyoronos: haha…pura2…tp ade academic part gak apa post ni..hehe..
seram btoi le kisah nitrogen ni..kalah cite kekasih ku seru
cik amiekimura aka cik andak bt sharif aka cik inspector ni nk kena nih!!!
haiisshh…cik CK wei..asyik cik CK jek yg tulis entries kat sinih..mana encik sorang lagi tuh? asyik2 recipes..cik CK ni apa sebenarnye profession? agak confuse hala tuju hidup cik CK nih (x psl2 hala tuju idup plak..hehehe..)
neway, wikipedia tu bukanlah source yg boleh dicategorykan sbg source yg credible. credibility wikipedia itu hakikatnye dipersoalkan..lantas, kami khususnye sbg academician tidak sama sekali menggalakkan (dlm erti kata lain meng’ban’kan penggunaan wikipedia di dlm mana2 kerja kursus students). di harap comments saya kali ini memberi manfaat kepada students sakalian.. (“,)
hehe…mr SKS offshore…kalau balik pon, sehari dua. jadi sayala tukang update blog nih…masa saya sign up utk jd author kat sini, dlm contract, saya bertanggung jawab utk category ‘food and drinks’ jek…jadi sy update la recipi..hehe…
pasal wikipedia tuh, jgnla dirisau kan…sy mmg xgunakan source tu dlm thesis sy…kalo setakat di blog ni sy pakai la..nk senang keje…tp jgn risau…segala maklumat di atas tu sume nye betul…heheh…anyway, timasih la MiZLeO atas nasihat yg bernas itu…
sy hanya mampu ketawa..sesungguhnya mmg kesah nitrogen ni sgt seram mengalahkan citer kekasihku seru! –>sambil tutup mata dan gigi bergetar..trr trr trr
blh thn la komen cik KeN nih…
hey makcik! next time if u r in the lab while doing experiment it is adviceable to wear something that more movement friendly..wear pants and shirt will do..plus ure boots and glove..heyy dgn berkain2 sume..tersangkur baru tau!! remember SAFETY MUST COME FIRST!!!!!