No-Break and other concentric nebulizers  can aspirate liquid samples or they can have sample pumped to them.

In either case, it's important to know how much sample is delivered - especially at uptakes below 400 ul/min.,
since spectroscopic signals become much more dependent upon uptake in that region.

EPOND's  SEDNA  volumetric flow meter was developed for this reason ... the Sedna measures true flow
in seconds instead of minutes - and gives precise and reproducible answers, irrespective of sample pH,
viscosity, density, thermal or other properties.

     

The  SEDNA  is powered by a small mains-DC power supply.
It gives precise measurement of sample flows in the range 5 to 2000 ul/min.

Although  No-Break Nebulizers are available with a range of aspirated uptakes from low ( < 10 ul/min. )
to quite high uptakes ( more than 1 ml/min. ), the use of a peristaltic or other type of pump
can extend the operating range of any individual nebulizer by a wide margin.

In such cases there is still a need for checks on uptake : pump drifts and short-term instabilities
can be flagged with an electronic meter ... peristaltic pump tubes, to cite just one example,
will often give a decreasing supply of pumped sample  as a tube ages.

When your analysis method requires that sample flow is constant  - whether by ICP-OES, ICP-MS, AAS  or other -
the  SEDNA  gives an assurance that's fast and accurate.

Price :   SEDNA, standard-version : CHF 940,-