This personal sampler is for evaluating personal exposure to dust in work environments.
Using an inertial impactor, this sampler separates inhalation dust (respirable particles) in accordance with PM4 (50 % cut in 4 μm particles) separation characteristics. Coarse particles larger than PM4 are collected by a stainless steel collection plate, and the inhalation dusts (respirable particles) are collected by a filter. As a result, the exposure by working personnel can be measured both in terms of the concentration of inhalation dust (respirable particles) and the total dust concentration.

● This sampler can collect PM4 respirable particles (with a 50 % cut at 4 μm) at a suction flowrate of 2.5 L/min.
● The provided NWPS-254 holder is compliant with the regulatory conditions in article 2 item 2 of the Work Environment Measurement Standards.
● It is used as a sampler to measure personal exposure concentrations to dust and manganese welding fumes as a personal sampling device for work environment measurements.
● The MP-W5P (CE compliant) suction pump with constant flowrate function and accumulated flowrate function is used.
● The instantaneous flowrate and accumulated flowrate can be displayed as values converted to 25 ℃ at 1 atm.
● The NWPS-254 filter holder for personal samplers is certified by the Japan Association for Working Environment Measurement.
● A belt hook is attached to the back of the MP-W5P minipump (CE compliant),