Picarro Launches Ultrasensitive HF (Hydrogen Fluoride) Gas Analyzer

Apr 14, 2008, 01:00 ET from Picarro, Inc.

    SUNNYVALE, Calif., April 14 /PRNewswire/ -- Picarro, Inc. has
 introduced the world's most sensitive real-time gas analyzer for trace HF
 detection, capable of measuring down to 10 parts per trillion (lower
 detection limit) in ambient air. In addition to its unprecedented
 sensitivity, the new analyzer operates with no requirement for frequent
 calibration and with complete immunity to cross-talk from any other ambient
 gas component, including varying moisture levels. Moreover, this simple to
 use analyzer can be operated remotely with sampling rates as fast 1 Hz,
 producing drift-free data with up to four digits of precision. Plus, the
 high dynamic range of this rugged analyzer means it can deliver a linear
 response for HF concentrations as high as parts per million, with an
 absolute accuracy of better than 1%.
     This new HF analyzer is based on Picarro's unique Wavelength-Scanned
 Cavity Ring Down Spectroscopy technology (WS-CRDS). This innovative
 technique measures near infrared absorption in a flow cell using an
 internal laser beam over an effective path length of up to 21 kilometers.
 And because only WS-CRDS scans and fits the entire absorption line profile,
 the HF concentration can be measured very precisely, even if there are
 other gas species present with absorption lines overlapping the HF line. No
 other real-time technique can deliver the sensitivity and precision of
 WS-CRDS. And other optical techniques, such as NDIR and single-wavelength
 CRDS, are also susceptible to signal cross-talk from other trace-gas
     The new Picarro HF analyzer is ideal for use in semiconductor
 fabrication facilities and cleanroom applications where ambient air must be
 rigorously monitored for HF. It will also find applications in other
 industries where HF may be present, such as aluminum smelting and
 glass/glassware production. "Hydrogen fluoride is an exceptionally
 dangerous gas and is notoriously difficult to measure reliably," said
 Michael Woelk, President and CEO of Picarro. "Our HF analyzer is another
 terrific example of the power of our technology to provide simple turn-key
     Picarro, Inc. is a privately held company dedicated to developing
 instrumentation for the highest sensitivity, precision and accuracy
 measurements of specific molecules of interest in environmental analyses,
 process monitoring, and emissions control. The company is a leader in
 cavity ring down spectroscopy (CRDS) technology with eight exclusive
 licenses to Stanford University patents and nine of its own on CRDS
 extensions. Visit us at http://www.picarro.com.
     Contact Information:
     Aaron Van Pelt, Marketing Engineer, avanpelt@picarro.com, (408)

SOURCE Picarro, Inc.