HOW IT WORKS:
What makes any detector useful is its ability to accurately measure a wide range of analytes. The problem is that almost every detector has a bias. The bias might be that one analyte responds more than another or that mobile phase affects detection differently.
The Corona ultra measures charge that is associated with analyte particles. The charge is in direct proportion to the amount of the analyte in your sample. Measuring charge is accurate and consistent, regardless of the compound. The result is that the Corona ultra detector can “see” any non-volatile analyte, including those without chromophores.
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STEP ONE
The charged aerosol detection process starts with converting the analyte into particles. The size of the particles increase with the amount of analyte.
STEP TWO
A stream of positively charged gas collides with the analyte particles. The charge is then transferred to the particles -- the larger the particles, the greater the charge.
STEP THREE
The particles are transferred to a collector where the charge is measured by a highly sensitive electrometer. This generates a signal in direct proportion to the quantity of analyte present.