LOT OF 6!! HACH MET ONE 227A & 227B Handheld Particle Counter

Arti HHPC-6 Handheld Particle Counter / Untested / As Is / For Repair

AIRY Technology P311 Particle Counter Airborne Dust Monitor P311 Unit

Climet CI-S21 Isokinetic Probe 1.0 CFM Air Particle Counter

MET ONE 227B Laser HANDHELD AIR Particle Counter AS-IS NOT TESTED

Met One Laser Particle Counter - 2082611-21 - 227A w/Warranty

HandiLax Mini Particle Counter

Climet Isokinetic Probe Particle Counter Probe Length 7"