N-FRM Sampler
เครื่องเก็บตัวอย่างฝุ่นละอองในบรรยากาศแบบปริมาตรต่ำ
The ARA N-FRM Sampler is a portable, battery-powered particulate sampler that establishes a new class of air sampler we call “Near FRM”. While it is not a certified US EPA Federal Reference Method sampler, the N-FRM Sampler delivers FRM accuracy at a fraction of the cost. It is the first of its kind to complete 24-hour sampling periods utilizing only battery-power at 16.7 LPM.