Casella Plastic Cyclone, Higgins-Dewell

Respirable fraction sampling heads are specifically designed to separate out the smaller dust fractions, which travel further into the human airways and are generally more harmful. The collection efficiency curve meet the ACGIH/ISO/CEN standards for a respirable curve with a median 50% cut point of 4µ. The cyclones work by physical separation of particles, whilst the Conical inhalable head operates by utilising size selection foams which can also give other PM fractions of particulates.