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How can NB-nebulizers be connected to argon and sample tubing ?
NB-nebulizers are supplied with standard connectors
that suit such tubes - 'quick-fit' connectors that are rated to 10 bars,
and RubeTube sample tube connectors that suit all commonly-used sample tubing.
My 'No-Break nebulizer' has been broken ! Can it be fixed ?
Fortunately, in most cases, yes. Wash it clean of any contamination and Post it to
EPOND Switzerland.
If the cost of nebulizer repair exceeds 30% of its initial purchase price, you'll receive an email asking permission to proceed.
How can the self-aspiration rate of a concentric nebulizer be best adjusted ?
Without changing the applied pressure, you can reduce the aspirated uptake by either lengthening the uptake tube,
or by reducing the internal diameter ( ID ) of the uptake tube.
Reducing the ID by a factor of 2 can cut the uptake by a factor of 5 or more.
This is governed by the Poiseuille-Hagen law
which is shown in this site's aspiration page .
EPOND Switzerland can provide you with a range of tubes and with components to connect them,
such as the 'RubeTubes'. Watch out for air leaks - the presence of small bubbles in a sample uptake tube
can rapidly reduce uptake and degrade stability, leading perhaps even to 'vapour-lock'.
EPOND product literature says that a
Boreal medium-uptake NB-nebulizer is made for a maximum uptake
of 800 ul/min.
- but can it be pumped with sample at a higher uptake ?
Yes - the stated uptake limits are advisory, although they indicate the limits within which the best overall results
are obtained ... and also the approximate limits of aspirated uptake.
Is there a simple way to measure the self-aspiration rate of a nebulizer ?
The best way to do this is with an EPOND
XENA flow meter for small liquid flows
- an electronic device to measure uptake accurately in seconds
- in the range 5 to 2000 microlitres per minute.
The patented measurement system of this reliable ** , accurate meter is volumetric
- and has software that permits re-configuring for custom requirements.
** Every EPOND flow meter ever made is still working today !
Are any of these NB-nebulizers available made of PFA ?
No - For PFA nebulizers and other PFA components EPOND recommends ESI's
products.
Apart from the detailed information about these products that's available from the
EPOND and
ESI web sites,
there's a lot of favourable, independent comment about them in the
archives of Mike Cheatham's PlasmaChem
bulletin board.
The 2 most well-known ESI PFA nebulizers are the MicroFlow and the PFA-ST ,
both of them perfectly suited to use with the APEX-Q and APEX-E high-sensitivity systems.
Does EPOND supply ICP components apart from nebulizers ?
Yes. Take a look at the EPOND site :
you'll see that there are ICP torches, spray chambers, cones, detectors
and a wide range of other atomic spectroscopy components and systems.
How does EPOND ship things ?
Normally by
FedEx/DHL or the Post, but we'll ship any way you specify.
If you have any less-frequently asked questions, please email and we'll answer within the day.
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EPOND Switzerland
Aerosol Technology
C.P. 389
CH - 1800 Vevey
Switzerland
tel.: +41 21 921 29 41
fax : +41 21 921 44 08
email
info @ nb-nebulizer. com
for any less-frequently asked questions.
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