Author Comment Last activity Moderation
Holger "If I got it right, your photometer is measuring amount of light traveling through a solution or suspension. The loss of signal could be due to abso..." | Read more » about 6 years ago
Holger "Hi there, my apologies, but I have not been here for a while. If you like, any of my projects published on instructables could be reposted as activ..." | Read more » about 6 years ago