Hello, I am doing research at the Univ of Arkansas and I was wondering if anyone knows where I can get 3 in. glass wafers with high Na+ concentration? It would be greatly appreciated if I get a response ASAP. Thank you. Sonya G. Iyasere U of A Engr Research Center FAX: 501-575-2719 PHONE:501-575-5083 Please ask for Rebecca Cragun.