Description
Mattson-Garvin Model 220 Air Sampler 120 Volt Built-in vacuum pump On/Off toggle switch with lighted On indicator. 1 RPH (revolutions per hour) synchronous drive motor Digital display programmable timer 120 Volt 60 Hz draws air through a 0.152 mm slit at 28.3 litres /minute can sample down to particle size well below 1
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