VVV-Group Hot Wire Anemometer AM-286 – Industrial Airflow Meter with Telescopic Probe, CFM/CMM Air Volume Calculation, ±3% Accuracy, HVAC Ventilation & Duct Air Velocity Tester

Temtop PMD351 Professional Aerosol Mass Monitor - Handheld PM1.0, PM2.5, PM10 & TSP Monitor with RS-485 for Industrial Hygiene and Environmental Compliance

CT Industrial: Smallest Gas Monitor on The Market! 4-Gas Monitor, Certificate for Future Calibration and Carry Bag! LEL/02/H2S/CO Rechargable Battery Your Gas Detection is Our Expertise

CT Industrial: Confined Space Monitor GX-Force Gas Monitor, Certificate for Free Calibration and Carry Bag! Confined Space Monitor: LEL, 02, H2S, CO (Dual) with Alkaline Batteries. CT-72-FA-A-A10

Manometer Gas Pressure Tester, Digital Manometer, -100-200Kpa, 10 Units Differential Pressure Gauge, Max/Min/Data Storage, 2-Port Tester for HVAC/Automotive Brake/Industrial/Lab Calibration (Regular)

BTMETER Ammonia Gas Detector Sensor 5800G and Industrial Thermometer 981D Combo

Kethvoz HVAC Anemometer CFM Wind Speed Meter, Digital Airflow Tester Measure Air Velocity Volume Temperature for AC System, Industrial Anemometro with Backlight MAX MIN AVG Data Storage KE-846A

Extech SDL720 Differential Pressure Manometer Datalogger - ±30 psi, 11 Pressure Units, Dual Input, USB/SD Card Data Logging, Backlit LCD, HVAC, Calibration, and Industrial Applications

Industrial Air Quality Meter with Real-Time Data Recording of CO2, CO, O2, Temperature & Humidity,(5 in 1) by AQ-9901SD Along with Factory Calibration Certificate

Casuenia Mold Test Kit for Home, 8 Simple Detection Tests, DIY Mold Detector at Home, Test HVAC System, Home Surfaces & Indoor Air Quality Testing Kits Includes Detailed Mold Identification Guide