Can I use Sep-Pak DNPH cartridges after they expire if they were properly stored? - WKB51024

ENVIRONMENT

• Sep-Pak DNPH
• Sep-Pak XPosure
• DNPH
• Air Sampling
• SPE
• formaldehyde
• aldehyde
• ketone

ANSWER

Yes, provided the cartridges were stored properly per the Care & Use manual. 

If expired, run a blank test on the cartridges prior to use, as described in the Care & Use manual, to ensure that the cartridges still work as intended and that the background levels of aldehyde and ketone fall within the lab's acceptable background levels.

ADDITIONAL INFORMATION

For additional information, see Sep-Pak DNPH-Silica Cartridges Care and Use Manual and Sep-Pak XPoSure Aldehyde Sampler Care and Use Manual.