Keeping units serviced with high-performance chemisorbant media is a very important part of system maintenance. If the media is not changed out when it is due for replacement, the unit will not function properly and unwanted gases will be released into the environment. The life span of media will vary depending on many factors, such as type and quantity of gas, airflow, etc., but on average it lasts for a little more than a year. There are multiple ways to test and see if the media is reaching its expiration date:

  1. Manual Bed Indicator – most deep bed scrubbers have a silver indicator inserted into its bed. Pull out the indicator to see where the furthest end of the indicator is being corroded. When the corrosion travels past the middle of the indicator, it is time to replace the media and ensure the system’s proper functioning.
  2. Electronic Bed Monitor (EBMv2) – The EBM has been upgraded to the EBMv2. Through continuous monitoring and an electronic notification system, this monitor makes unit maintenance predictable and plannable. The EBMv2 features six externally wired and mounted sensors to detect changes in the life of the adsorbent media. The sensors transmit this information to a control panel that predicts a media consumption date based on a proprietary algorithm, alerting users when media is partially and completely consumed.
  3. Media Testing – free media testing is offered to all PureAir customers. This testing requires collecting media samples from the system. For deep bed scrubbers, we recommend getting media from each system side port. Put the media samples in Ziploc bags, label, and mail to us for processing. As soon as we receive the media, we will test it and send back a lab report analyzing the lifetime value of the media.
  4. Corrosivity Test Kit – a test kit consists of a strip of silver and copper that is hung in the applicable room for 30 days. The test kit is then sent back to our in-house lab to process the corrosion levels on the copper and silver plates and determine which type of gases caused the corrosion, and in what quantities. From there, PureAir will recommend a solution to remove the appropriate gases from the room. We also offer an Environment Corrosivity Monitor (ECM), an electronic version of the corrosivity test kit, that offers live, accurate results of environment surveillance and detection of corrosive gases without lab testing.

Manual Bed Indicator
Manual Bed Indicator

Sample media testing form
Sample media testing form shown above. Click here to print media shipping labels, 6 per sheet.