Order mounting adhesives
Most mounting adhesives are suitable for many different materials, so you can use an adhesive such as High-Tack as a general mounting adhesive. It is only wise to order a specific adhesive sealant if you have to glue very specific materials.
Mirror glue, for example, is a special mounting adhesive for mirrors; it is acid-free, does not affect the silver layer and ensures optimal adhesion to almost all surfaces. You can also use this neutral adhesive sealant to mount painted glass on a wall, for example.