Vacuum Filters
Question:
Answer: Probably so that you cannot have water [from the aspirator] back up into the vacuum flask, contaminating your filtrate.
Remember, remove the vacuum hose from the aspirator before you turn the water off....
This week's series looks at small format products that have revolutonised life in Germany and beyond,starting today with the thermos flask.
Cheer up Herr Buchner by learning how to use his filter and flask to separate crystals, for instance, after a recrystallisation.
Hassan has been in Cornton Vale prison, near Stirling, since the raid on 14th September. She tried to get bail but was refused and she lost her appeal to the High Court against the decision.
Appearing at Lerwick Sheriff Court today, Hassan pled guilty to being concerned in the supply of heroin and admitted a previous drugs conviction. Her lawyer, Gordon Williams, said her adult life had been blighted by her drug problem although she had taken steps to tackle it during her two-and-a-half months in Scotland’s women’s prison. She also has various health problems.
Sheriff Graeme Napier deferred sentence for two weeks for a background report which will look at alternatives to continuing her stretch in jail. However he told Hassan it was almost inevitable she would get a prison sentence.
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Vacuum flask heroin deliveries likely to lead to jail term for Lerwick woman But the illegal narcotic was detected by a sniffer dog at the Post Office even though it was concealed inside a vacuum flask. The police obtained a search warrant and allowed the package to be delivered before pouncing on Desiree Hassan, 47, ... |
Public sector strike rookies in a tangle of emotions and convictions
Instead of flaming braziers, protection against the gnawing cold was provided by vacuum flasks and Danish pastries, lined up in neat rows on the pavement. Rather than trying to convince any strike-breakers to turn round and go home, the essential point ...
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Case Study | Gifts for Drinkers
Certainly breaking out a flask at the game is a glorious moment, but why does it have to always be some embarrassing silvery thing with initials on it that looks like someone's retirement gift? Old school in the best way, this Stanley flask ($20 online ...
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Voxpop - What is your favourite design story of an everyday object?
'Five reasons vacuum flasks are cool: 1) Frothing liquid nitrogen made science lessons dangerous and interesting. 2) A joke my dad tells – it keeps hot things hot and cold things cold… but how does it know? 3) Inventor James Dewar also mass-produced ...
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Eating Spain Modernist tools, including the dehydrator, the liquidizer, the immersion circulator, the low-temperature steam oven, the rotovap, the smoke gun and the flask of liquid nitrogen, are now fixtures of restaurant kitchens everywhere in the world. ... |
