vWCPC

1nm detection

The “versatile WCPC” uses our latest, water-based condensation technology to provide particle detection near 1 nm.

What it does:

Measures particle number concentrations from near 1 nm to several micrometers.

Features:

• Near 1-nm detection:
     May choose to exclude charger ions, with ~ 2 nm detection
     May approach 1 nm detection, with response to some charger ions
•Simple flow paths.
• No sheath flow.
• No water condensation in flow lines.
• Optics are operated at close to room temperature.
• Tolerates rapid pressure variations at the inlet
• No homogeneous nucleation, even at low pressure

How it works:

Calibration curves for salt and metal oxide aerosols

Ambient data collected with collocated vWCPCs