Silver halide photo paper tarnishes in the presence of hydrogen sulfide, creating silver sulfide....
Public Lab is an open community which collaboratively develops accessible, open source, Do-It-Yourself technologies for investigating local environmental health and justice issues.
This is a testing site only. See the live Public Lab site here »
If you cannot use the ReCaptcha to verify you are not a bot, use this alternative verification.
sign up to join the Public Lab community
Forgot your password? Reset it here
Talk page for Hydrogen Sulfide Photopaper | This page allows for synchronized editing by multiple people as you type. Learn more | for help, visit our chatroom
If this page does not load properly, try here