Aqueous Mounting Media is formulated for covering tissue sections and cell preparations immunohistochemically stained with chromogens producing alcohol soluble OR alcohol insoluble end products. Aqueous Mounting Media can be used with chromogens such as Fast Red or AEC that require an aqueous mounting medium, or those that do not, such as DAB. No heating is required prior to use. This product is optimal for use both with and without a glass coverslip.