Detector Tubes Require No Pumps or Charts
Diffusion Detector Tubes determine average contaminant concentrations in your work area without pumps or charts. Choose the type you need. To use, open Diffusion Detector Tube, insert into tube holder (sold separately) and clip to lapel. Length of stain in pre-calibrated tube indicates dosage. To calculate TWA, divide reading by hours of exposure (8 hours maximum). Pkg. of 10.
Tube Holders (No. 5427) sold separately in pkg. of 3.