Fourteen REE glasses, together with a Y glass, have been prepared as standard material for SIMS, EPMA and other mico-beam techniques. A suite of these standards is available on request. Each glass has a single REE in a Si-Al-Ca-O based matrix. The REE is present at a concentration of approximately 20wt% oxide and has been analysed independently by ICP, SIMS, AA, and EMPA. The preparation and analysis of the glasses have involved a number of staff over a period of 20 years. The major contributors are: E. Cairns P.C. Choi (University of Bristol) J. Craven K. Fearnhead P. Hadden P. Hill S. Malik (University of Reading) M. Saunders A. Simonetti (University of Alberta) D. Steele E. Tomlinson (Royal Holloway, University of London) Preparation of rare earth glasses Find information on the preparation of rare earth glasses, including a detailed description of the gel making process. REE glass compositions We have provided a compilation of the REE data for the individual glasses including EPMA, ICP, and AA analyses. This article was published on 2024-07-01