Supplying hydrogen-sulphide gas for a small class in qualitative analysis is usually a difficult problem in a small laboratory. This problem was solved at Upper Iowa University by using the commercial product "Aitch-tu-ess" (H2S) as the source of the gas and setting up the apparatus. This method was found to be both economical and convenient and eliminated practically all of the undesirable odor which so often accompanies a qualitative analysis laboratory.
Proceedings of the Iowa Academy of Science
©1937 Iowa Academy of Science, Inc.
"Automatic Hydrogen-Sulphide Generator,"
Proceedings of the Iowa Academy of Science, 44(1), 107-108.
Available at: https://scholarworks.uni.edu/pias/vol44/iss1/21