Type: Normal Models: 228A, 228B, 229A, 229B Micron sensitity, sample rate, and particle display amount dependent on model
Model 228 Particle Counter
The simplest, one switch, one display and quick results particle counters and now available. The Model 228 takes a six second sample, then calculates and displays the concentration in particles per cubic foot. The 229 displays the number of particles in 0.1 cubic feet of air after a one-minute sample. Both units detect discrete particles using a laser based sensor.
