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产品于2006年4月30日停产。
The Model 3022A Condensation Particle Counter detects particles down to 7 nm in diameter. Using both single-count and photometric detection modes, it provides highly accurate measurements for concentrations as high as 107particles/cm3. That's several orders of magnitude higher than similar particle counters and sufficient to handle even dirty, urban environments. The 3022A includes a front-panel display, built-in microprocessor, and serial communications port.