Filter attachment removes toxic gases

This new Zero Filter Attachment from E Instruments allows for more accurate zeroing of VOC gas sensors. The filter removes all of the VOC’s and other toxic gases, except CO2, from the ambient air and allows the instrument to properly measure the zero point for the VOC’s gas sensor. Once the filter is removed, the instrument reads a much more accurate VOC reading.
09-26-16
http://www.e-inst.com