Discussion: "Investigation of Flow in Liquids by Use of Birefringent Colloidal Solutions of Vanadium Pentoxide" (Ullyott, Philip, 1947, Trans. ASME, 69, pp. 245–249)

Robert Lowy
1947 American Society of Mechanical Engineers. Transactions of the American Society of Mechanical Engineers  
The writer would like to add a few general remarks on some of the technical difficulties encountered in using this tool in the laboratoiy. Bentonite suspensions are very unpleasant to work with. When they come in contact with most metals, including alloys of iron and lead, they flocculate, coagulate, and lose their properties
doi:10.1115/1.4017367 fatcat:6c7u5wkdbbbibbaknpaqv3w4fi