3Mª Organic Vapor Air Monitoring System uses a single charcoal sorbent wafer for easy collection of organic vapors and can be used for most applica...

3Mª Sound Detector Kit features a rechargeable lithium polymer battery and is designed for measurement of workplace/community noise levels. SD - 20...

3Mª Noise Indicator features a rechargeable battery that operates for up to 200 hrs and it is an economical investment in your hearing conservation...