**Please note that all CO2Meter operations will close starting at 3:00 pm et. Friday, April 19 in observance of the Easter holiday. All operations will reopen Tuesday, April 23 at 8:30 am et. All orders placed after noon et. on April 19 will ship on April 23. Thank you.**
This application note explains the gas permeable, hydrophobic (water repelling) filters covering the air vents in our 1% and 30% CO2, %RH and Temperature diffusion data loggers model numbers CM‐0016, CM‐0017, CM‐0018, CM‐0019. It allows gas to pass through the filter, but not H20 molecules.