Rh of hcm beads

[Rspray]

How can I raise the RH of HCM beads? How long should they stay in a ziploc bag with a wet sponge?

 

[iCraig]

This page has all the information you need on raising and lowering the RH.

http://hcmbeads.com/usingbeads.asp

 

[Rspray]

The overnight thing isnt working--the RH always goes back to 65 in a day or two. Can the beads be left in with the sponge for 3-4 days to attempt to raise the rh to 68-69?