Composite milk-samples for use at creameries, as a means of saving labor in the valuing of milk by any of the "oil tests,'' I first proposed (in detail) in Bulletin No. 9, of the Iowa Experiment Station, May 1890. The preserving agent there recommended for preserving the samples was corrosive sublimate, HgCl2, numerous experiments having shown that it preserves the mechanical, as well as the chemical, condition of milk better than any other common antiseptic. For use in creameries I insisted that the sublimate have mixed with it some suitable aniline color, as a guard against accidental poisoning; and to hasten solution in the milk, admixture of common salt, NaCl, was recommended.
Proceedings of the Iowa Academy of Sciences
©1890 Iowa Academy of Science, Inc.
Partick, G. E.
"Composite Milk-Samples in the Laboratory,"
Proceedings of the Iowa Academy of Science, 1(Pt. 2), 73-75.
Available at: https://scholarworks.uni.edu/pias/vol1/iss2/32