Uptake Measurement

The 'Tyfoon' 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 XENA volumetric flow meter was thus developed ...
the Xena measures true flow in seconds instead of minutes - and gives precise
and reproducible answers, irrespective of sample pH,
viscosity, density, thermal or other properties ...

Even flows of pure HF acid can be measured with the XENA.

The XENA 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 EPOND 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 -
the XENA can give that assurance - price : $ 490,-