Teledyne API

Still using 50+ year-old technology
for NO2-NOx-NO gas measurements?

Try our new Model N500 CAPS True NO2-NOx-NO Analyzer!

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Model 470
Dissolved Ozone Analyzer

Ideal for semiconductor and other high purity applications

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The most capable trace-level,
portable Ozone calibrator available

Introducing the Model T753U

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Truly, continuous and real-time
PM mass measurements

US EPA-approved: The Model T640 PM Mass Monitor

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Personalization at your fingertips
with NumaView™ Software

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Welcome to Teledyne API: a global market leader in air quality and process gas monitoring instrumentation.

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