Mercury manometer emptying/refilling query
Tony Herlt
have a U-tube which is closed at one end and a stopcock at the other
- possibly these are called Anschutz manometers. I want to empty
them, clean the U-tube and then refill with mercury, but unfortunately
do not have the instructions to accomplish this. Would anyone have a
set of instructions they could fax to me or point me in the right
direction. My fax # is 61 2 6249 5995. Please reply to my e-mail
address (he...@rsc.anu.edu.au).
TIA
Tony Herlt
David Lloyd-Jones
"Tony Herlt" <he...@rsc.anu.edu.au> wrote in message
news:3875c4ae...@news.cyberone.com.au...
You do not need instructions. You need to talk to your lab's trusty glass
blower.
He's probably the swarthy guy selling chips and gravy down at the corner.
-dlj.
Uncle Al
Tony Herlt wrote:
>
> I have several old mercury manometers manufactured by Gallenkamp that
> have a U-tube which is closed at one end and a stopcock at the other
> - possibly these are called Anschutz manometers. I want to empty
> them, clean the U-tube and then refill with mercury, but unfortunately
> do not have the instructions to accomplish this. Would anyone have a
> set of instructions they could fax to me or point me in the right
> direction. My fax # is 61 2 6249 5995. Please reply to my e-mail
> address (he...@rsc.anu.edu.au).
You remove the mercury, disassemble the hardware, remove any metal
parts. Soak in nitric acid to remove residues (hood), wash with
distilled water, dry at 110 C overnight. Refill with triple-distilled
mercury. Stopcock lubrication should be Apeizon or Flurolube.
Silicone doesn't stick in there for the long haul.
--
Uncle Al
http://www.mazepath.com/uncleal/
http://www.ultra.net.au/~wisby/uncleal/
http://www.guyy.demon.co.uk/uncleal/
(Toxic URLs! Unsafe for children and most mammals)
"Quis custodiet ipsos custodes?" The Net!
Christopher R. Lee
thing.
Unfortunately, mercury manometers don't seem to be rivalled by electronic
gauges in terms of resistance to contamination/corrosion and price. I hope
some manufacturer will contradict me.
Regards
Tony Herlt <he...@rsc.anu.edu.au> a écrit dans le message :
3875c4ae...@news.cyberone.com.au...
> I have several old mercury manometers manufactured by Gallenkamp that
> have a U-tube which is closed at one end and a stopcock at the other
> - possibly these are called Anschutz manometers. I want to empty
> them, clean the U-tube and then refill with mercury, but unfortunately
> do not have the instructions to accomplish this. Would anyone have a
> set of instructions they could fax to me or point me in the right
> direction. My fax # is 61 2 6249 5995. Please reply to my e-mail
> address (he...@rsc.anu.edu.au).
>
> TIA
>
> Tony Herlt
Bob Feeney
correctness? In the hands of qualified people and when used in intact and
properly working instruments, mercury is not an environmental concern.
There are many far more dangerous substances to worry about than mercury.
Christopher R. Lee wrote in message ...
LLUUAAPP
air space to vent the closed end ,, apply small amount of air pressure and
manipulate the tube to drain the HG . Use the cap tube to clean and flush and
to refill. By the way a U tube manometer will not be accurate if closed on one
end unless it was a special calibration to use the compressed gas or evacuated
space on the closed end as part of the calibration.
with respect, luap/paul
Co...@beer.com
> It's no longer environmentally correct to use mercury for this sort of
> thing.
Yes. Throw them out immediately.
Reminds me of the anti-fur demonstrator who wanted to yell at me about 'the
innocent sheep that had to die' for my wool sweater.
--
Conal
In the end, we shall make thoughtcrime literally impossible,
because there will be no words in which to express it.
-George Orwell