A porcelain filter mat has been made (Sweeney and Quam - J.A.C.S. 46, 958, 1924) which withstands the heat of a blast lamp, remains constant in weight after repeated washing with aqua regia, has uniform porosity, and has the advantages of a Monroe crucible. Methods of standardizing the mats are being studied. The building of silica filter mats in silica crucibles is being investigated. Preliminary results indicate that a silica mat can be made according to the plan of the porcelain mat and have the added advantages that silica affords.
Proceedings of the Iowa Academy of Science
©1924 Iowa Academy of Science, Inc.
Quam, G. N. and Wright, H. V.
"The Preparation of Permanent Filter Mats for Gooch Crucibles,"
Proceedings of the Iowa Academy of Science, 31(1), 287-287.
Available at: https://scholarworks.uni.edu/pias/vol31/iss1/80